Mathematics
Grade10
Easy
Question
Solve the following using the substitution method and find the value of x and y:
-2y = 10
-2x + y = -11
- 3, -5
- -3, -5
- 1, 3
- 2, 3
Hint:
The linear equation in two variable is an equation with two variable and degree one.
The correct answer is: 3, -5
Step 1 of 1:
We have given two equations
-2y = 10………………………. 1
-2x + y = -11………………………. 2
From 1
-2y = 10
y = -5
Now, Put this value of y in 2nd equation.
-2x + (-5) = -11
-2x – 5 = -11
-2x = - 6
x = 3
In the substitution method, we first write one variable in the form of another variable.