Question

A student is trying to solve the system of two equations given below:

Answer 1

A. 2(x + y = 8)
Once you do that with Equation P, you can do the following:

2x + 2y = 16
(2x + 2y) - (2x + 5y) = 16 - 24 ( modified Equation P minus Equation Q )
2x - 2x + 2y - 5y = 16 - 24
-3y = -8
Magic. x has been eliminated.