Solve the following using the substitution method and find the value of x and y:
x – 5y = 12
x – y = 4

The correct answer is: 2, -2

Step 1 of 1:
We have given two equations
x – 5y = 12……………………… 1
x – y = 4………………………. 2
From 2
x – y = 4
x = 4 + y
Substituting x in 1^st equation,
(4+y) – 5y = 12
4 + y - 5y    =12
4 - 4y       =12
-4y = 8
y = -2
Substituting in 2^nd equation,
x - (-2) = 4
x + 2 = 4
x = 2

In the substitution method, we first write one variable in the form of another variable.