Question

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step.

9x-2y=-75
2x-2y=-12
Answer choice:
A) Add to eliminate x.
B) Add to eliminate y.
C) subtract to eliminate y.
D)subtract to eliminate x.

Answer 1

C.) subtract to eliminate y

Explanation:

Given

9x - 2y = -75

2x - 2y = -12

Subtract to eliminate y

-2y - (-2y) = -2y + 2y = 0