Question
Solve the following by using elimination method: 2x + y = 6 , 3y = 8 + 4x
Hint:
find y by eliminating x and find x by substituting y in the equations .
The correct answer is: x = 1 ; y = 4
Ans :- x = 1 ; y = 4
Explanation :-
Step 1 :- find y by eliminating x
Eliminating x by doing eq 2- 2(eq1) then
Step 2 :- substitute value of y and find x
x = 1 and y = 4 is the solution of the given pair of equations.
Related Questions to study
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For the solution of the system of equations above, what is the value of ?
Note:
The equations can be solved in many other ways like substitution
method which is: to eliminate one variable in any one of the
equations with the help of other equation. As we need to find the
value of x, we try to find the value of y in terms of x from one
equation. Then put that value of y in the other equation to get a linear equation in one variable , which is x.
For the solution of the system of equations above, what is the value of ?
Note:
The equations can be solved in many other ways like substitution
method which is: to eliminate one variable in any one of the
equations with the help of other equation. As we need to find the
value of x, we try to find the value of y in terms of x from one
equation. Then put that value of y in the other equation to get a linear equation in one variable , which is x.
If E, F, G and H are respectively the mid points of the sides of a parallelogram ABCD and ar(EFGH) = 40 sq.cm , find the ar (parallelogram ABCD).
If E, F, G and H are respectively the mid points of the sides of a parallelogram ABCD and ar(EFGH) = 40 sq.cm , find the ar (parallelogram ABCD).
A soft drink is available in two packs. i) a tin can with a rectangular base of length 5 cm and width 4 cm, having a height of 15 cm and ii) a plastic cylinder with circular base of diameter 7 cm and height 10 cm. Which container has greater capacity and by how much?
A soft drink is available in two packs. i) a tin can with a rectangular base of length 5 cm and width 4 cm, having a height of 15 cm and ii) a plastic cylinder with circular base of diameter 7 cm and height 10 cm. Which container has greater capacity and by how much?
Two transversals are cutting two parallel lines as shown in the diagram. Find the missing values: x, y and
Two transversals are cutting two parallel lines as shown in the diagram. Find the missing values: x, y and
Find the value of x and classify the triangle by its angles.
Find the value of x and classify the triangle by its angles.
Note:
The definition of probability used above is the definition of theoretical probability or classical probability. There are many other terms in the concept of probability that the student must be familiar with to solve this question, such as event, outcome, favour able outcome, etc.
Note:
The definition of probability used above is the definition of theoretical probability or classical probability. There are many other terms in the concept of probability that the student must be familiar with to solve this question, such as event, outcome, favour able outcome, etc.
, what is the value of 
?
