Question

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

-9x + 4y = 17
9x + 7y = 5

A. Subtract to eliminate x.
B. Subtract to eliminate y.
C. Add to eliminate y.
D. Add to eliminate x.

Answer 1

Add to eliminate X that way it will be much easier to solve the system of equations.

Explanation:

-9x + 4y = 17

9x + 7y = 5

11y = 22

Last step is to divide both sides by 11 and your answer should come to 2!