Mathematics
Grade-7
Easy

Question

Evaluate the expression for the given value of the variable.
3x + 5 when x = 5

  1. 18
  2. 20
  3. 200
  4. 15

hintHint:

Substitute 5 in the place of x

The correct answer is: 20


    3x + 5 when x = 5
    =3(5) +5
    =15+5
    =20

    Related Questions to study

    Grade-7
    Mathematics

    Simplify the following using distributive property of multiplication:
    9(3y–4)

    Given Expression:
    9(3y–4)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which yields ab+ ac as a result.
    Similarly, By applying the Distributive Law to 9(3y–4):
    9(3y–4)
    left parenthesis 9 cross times 3 y right parenthesis plus left parenthesis 9 cross times negative 4 right parenthesis
    = (27y) + (-36)
    = 27y - 36.
    Hence, the expression 9(3y–4) becomes 27y-36 after expansion.

    Simplify the following using distributive property of multiplication:
    9(3y–4)

    MathematicsGrade-7

    Given Expression:
    9(3y–4)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which yields ab+ ac as a result.
    Similarly, By applying the Distributive Law to 9(3y–4):
    9(3y–4)
    left parenthesis 9 cross times 3 y right parenthesis plus left parenthesis 9 cross times negative 4 right parenthesis
    = (27y) + (-36)
    = 27y - 36.
    Hence, the expression 9(3y–4) becomes 27y-36 after expansion.

    Grade-7
    Mathematics

    Evaluate 2a + 4b
    if a = 10     and    b = 6

    Evaluate 2a + 4b
    if a = 10     and    b = 6

    MathematicsGrade-7
    Grade-7
    Mathematics

    Evaluate 3x + 8   if x = 2

    Evaluate 3x + 8   if x = 2

    MathematicsGrade-7
    parallel
    Grade-7
    Mathematics

    Expand the following using distributive property of multiplication:
    6(x + 4x)

    Given Expression:
    6(x + 4x)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    Similarly, By applying the Distributive Law to 6(x + 4x):
    6(x + 4x)
    left parenthesis 6 cross times x right parenthesis plus left parenthesis 6 cross times 4 x right parenthesis
    = 6x + 24x.
    Hence, the expansion of the 6(x + 4x) becomes 6x + 24x.

    Expand the following using distributive property of multiplication:
    6(x + 4x)

    MathematicsGrade-7

    Given Expression:
    6(x + 4x)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    Similarly, By applying the Distributive Law to 6(x + 4x):
    6(x + 4x)
    left parenthesis 6 cross times x right parenthesis plus left parenthesis 6 cross times 4 x right parenthesis
    = 6x + 24x.
    Hence, the expansion of the 6(x + 4x) becomes 6x + 24x.

    Grade-7
    Mathematics

    Evaluate bc + 5a
    When a = 3, b = 4, and c = -6

    Evaluate bc + 5a
    When a = 3, b = 4, and c = -6

    MathematicsGrade-7
    Grade-7
    Mathematics

    Simplify the following using distributive property of multiplication: 4(3x+5)

    Given Expression:
    4(3x+5)
    Since, The given expression is in the form of a(b+ c) then, we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, By applying the Distributive Law to 4(3x+5) :
    4(3x+5)
    left parenthesis 4 cross times 3 x right parenthesis plus left parenthesis 4 cross times 5 right parenthesis
    =(12x) + (20)
    =12x + 20.
    Hence, the expression 4(3x+5) becomes 12x + 20 after it's evaluation.

    Simplify the following using distributive property of multiplication: 4(3x+5)

    MathematicsGrade-7

    Given Expression:
    4(3x+5)
    Since, The given expression is in the form of a(b+ c) then, we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, By applying the Distributive Law to 4(3x+5) :
    4(3x+5)
    left parenthesis 4 cross times 3 x right parenthesis plus left parenthesis 4 cross times 5 right parenthesis
    =(12x) + (20)
    =12x + 20.
    Hence, the expression 4(3x+5) becomes 12x + 20 after it's evaluation.

    parallel
    Grade-7
    Mathematics

    Expand the following using distributive property of multiplication:
    6(12x–7)

    Given Expression:
    6(12x–7)
    Since, it is in the form a(b+ c) we can apply Distributive Law which produce ab+ ac as a result.
    Similarly, By applying Distributive Law to 6(12x–7) :
    6(12x–7)
    left parenthesis 6 cross times 12 x right parenthesis plus left parenthesis 6 cross times negative 7 right parenthesis
    = (72x) + (-42)
    = 72x - 42.
    Hence, the expression 6(12x–7) becomes 72x - 42 after it's expansion.

    Expand the following using distributive property of multiplication:
    6(12x–7)

    MathematicsGrade-7

    Given Expression:
    6(12x–7)
    Since, it is in the form a(b+ c) we can apply Distributive Law which produce ab+ ac as a result.
    Similarly, By applying Distributive Law to 6(12x–7) :
    6(12x–7)
    left parenthesis 6 cross times 12 x right parenthesis plus left parenthesis 6 cross times negative 7 right parenthesis
    = (72x) + (-42)
    = 72x - 42.
    Hence, the expression 6(12x–7) becomes 72x - 42 after it's expansion.

    Grade-7
    Mathematics

    Expand the following using distributive property of multiplication: 14(8x−3)

    Given Expression:
    14(8x−3)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    * similarly, By applying the Distribution law to 14(8x−3):
    14(8x−3)
    left parenthesis 14 cross times 8 x right parenthesis plus left parenthesis 14 cross times negative 3 right parenthesis
    = (112x) + (-42)
    =112x-42.
    Hence, the expression 14(8x−3) becomes 112x -42 after it's expansion.

    Expand the following using distributive property of multiplication: 14(8x−3)

    MathematicsGrade-7

    Given Expression:
    14(8x−3)
    Since, the given expression is in the form of a(b+ c) we can apply Distributive Law which produces ab + ac as a result.
    * similarly, By applying the Distribution law to 14(8x−3):
    14(8x−3)
    left parenthesis 14 cross times 8 x right parenthesis plus left parenthesis 14 cross times negative 3 right parenthesis
    = (112x) + (-42)
    =112x-42.
    Hence, the expression 14(8x−3) becomes 112x -42 after it's expansion.

    Grade-7
    Mathematics

    Simplify the following using distributive property of multiplication: 3(9x−5)

    Given Expression: 
    3(9x−5)
    Since, it is in the form of a(b+ c), we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, By applying the Distribution Law to 3(9x−5):
    3(9x−5)
    left parenthesis 3 cross times 9 x space right parenthesis plus left parenthesis 3 cross times negative 5 space right parenthesis
    = (27x)+(-15)
    = 27x-15.
    Hence, the expression 3(9x−5) becomes 27x-15 after expansion.

    Simplify the following using distributive property of multiplication: 3(9x−5)

    MathematicsGrade-7

    Given Expression: 
    3(9x−5)
    Since, it is in the form of a(b+ c), we can apply Distributive Law which produces ab+ ac as a result.
    Similarly, By applying the Distribution Law to 3(9x−5):
    3(9x−5)
    left parenthesis 3 cross times 9 x space right parenthesis plus left parenthesis 3 cross times negative 5 space right parenthesis
    = (27x)+(-15)
    = 27x-15.
    Hence, the expression 3(9x−5) becomes 27x-15 after expansion.

    parallel
    Grade-7
    Mathematics

    Expand 4(8y + 15)

    Given Expression:
    4(8y + 15)
    Since, it is in the form a(b+ c), we can apply Distributive Law of Multiplication which produces ab+ ac as result.
    Similarly, By applying the Distribution Law to 4(8y + 15):
    4(8y + 15)
    left parenthesis 4 cross times 8 y right parenthesis plus left parenthesis 4 cross times 15 right parenthesis
    = (32y) + (60)
    = 32y + 60.
    Hence, the expansion of 4(8y + 15) yields 32y + 60.

    Expand 4(8y + 15)

    MathematicsGrade-7

    Given Expression:
    4(8y + 15)
    Since, it is in the form a(b+ c), we can apply Distributive Law of Multiplication which produces ab+ ac as result.
    Similarly, By applying the Distribution Law to 4(8y + 15):
    4(8y + 15)
    left parenthesis 4 cross times 8 y right parenthesis plus left parenthesis 4 cross times 15 right parenthesis
    = (32y) + (60)
    = 32y + 60.
    Hence, the expansion of 4(8y + 15) yields 32y + 60.

    Grade-7
    Mathematics

    Simplify the following using distributive property of multiplication: 10 (7m+3n)

    Given Expression:
                                10 (7m+3n)
    Since, it is in the form of a(b+ c), we can apply distributive law which produces ab +ac as a result.
    Similarly, By applying the Distributive Law to a 10 (7m+3n):
    10 (7m+3n)
    left parenthesis 10 cross times 7 m right parenthesis plus left parenthesis 10 cross times 3 n right parenthesis
    = 70m + 30n.
    Hence, the expansion of 10 (7m+3n) is 70m + 30n.

    Simplify the following using distributive property of multiplication: 10 (7m+3n)

    MathematicsGrade-7

    Given Expression:
                                10 (7m+3n)
    Since, it is in the form of a(b+ c), we can apply distributive law which produces ab +ac as a result.
    Similarly, By applying the Distributive Law to a 10 (7m+3n):
    10 (7m+3n)
    left parenthesis 10 cross times 7 m right parenthesis plus left parenthesis 10 cross times 3 n right parenthesis
    = 70m + 30n.
    Hence, the expansion of 10 (7m+3n) is 70m + 30n.

    Grade-7
    Mathematics

    Simplify the following using distributive property of multiplication: 8 (7q+4)

    Given Expression:
    8 (7q+4)
    Since, it is in the form a(b +c) we can apply Distributive Law which produces ab + ac as a result.
    Similarly, By applying the Distributive Law to 8 (7q+4) :
    8 (7q+4)
    left parenthesis 8 cross times 7 q space right parenthesis space plus space left parenthesis 8 cross times 4 space right parenthesis
    = 56q + 32.
    Hence, the distribution property of multiplication to 8 (7q+4) yields 56q + 32.

    Simplify the following using distributive property of multiplication: 8 (7q+4)

    MathematicsGrade-7

    Given Expression:
    8 (7q+4)
    Since, it is in the form a(b +c) we can apply Distributive Law which produces ab + ac as a result.
    Similarly, By applying the Distributive Law to 8 (7q+4) :
    8 (7q+4)
    left parenthesis 8 cross times 7 q space right parenthesis space plus space left parenthesis 8 cross times 4 space right parenthesis
    = 56q + 32.
    Hence, the distribution property of multiplication to 8 (7q+4) yields 56q + 32.

    parallel
    Grade-7
    Mathematics

    Expand by distributive property. −3(−2a+3)

    Given expression:
    −3(−2a+3)
    Since, it is in the form a(b+ c) we can apply Distribution law which produces ab + ac as result.
    Similarly, By applying the Distribution Law to −3(−2a+3) :
    −3(−2a+3)
    left parenthesis negative 3 cross times negative 2 a right parenthesis space plus space left parenthesis negative 3 cross times 3 right parenthesis
    left parenthesis 6 a space right parenthesis space plus space left parenthesis negative 9 space right parenthesis
    = 6a -9.
    Hence, The expression −3(−2a+3) yields 6a -6 after it's expansion.

    Expand by distributive property. −3(−2a+3)

    MathematicsGrade-7

    Given expression:
    −3(−2a+3)
    Since, it is in the form a(b+ c) we can apply Distribution law which produces ab + ac as result.
    Similarly, By applying the Distribution Law to −3(−2a+3) :
    −3(−2a+3)
    left parenthesis negative 3 cross times negative 2 a right parenthesis space plus space left parenthesis negative 3 cross times 3 right parenthesis
    left parenthesis 6 a space right parenthesis space plus space left parenthesis negative 9 space right parenthesis
    = 6a -9.
    Hence, The expression −3(−2a+3) yields 6a -6 after it's expansion.

    Grade-7
    Mathematics

    Expand the expression using the distributive property. 4(k−7)

    Given Expression:
    4(k−7)
    Since, it is in the form a(b+ c), we can apply the distribution law which yields ab+ ac as result.
    Similarly, By applying the Distributive Law to 4(k−7):
    4(k−7)
    left parenthesis 4 cross times k space right parenthesis space plus space left parenthesis 4 cross times negative 7 space right parenthesis
    = 4k -28.
    Hence, the expression 4(k−7) becomes 4k -28 after it's expansion.

    Expand the expression using the distributive property. 4(k−7)

    MathematicsGrade-7

    Given Expression:
    4(k−7)
    Since, it is in the form a(b+ c), we can apply the distribution law which yields ab+ ac as result.
    Similarly, By applying the Distributive Law to 4(k−7):
    4(k−7)
    left parenthesis 4 cross times k space right parenthesis space plus space left parenthesis 4 cross times negative 7 space right parenthesis
    = 4k -28.
    Hence, the expression 4(k−7) becomes 4k -28 after it's expansion.

    Grade-7
    Mathematics

    Find the sum: (7k + 9) + (4k - 3)

    Find the sum: (7k + 9) + (4k - 3)

    MathematicsGrade-7
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.