3x - y = 7

6x - y = 10

When solving this system of equations by elimination, which could be the resulting equation when a variable has been eliminated?

A) 9x - 2y = 17

B) - 3y = 24

C) - 3x = - 3

D) 9x = 17

Elim

C) - 3x=-3

Step-by-step explanation:

When you subtract the 3x-y=7 from 6x-y=10, you will receive the following equation:

3x-6x-y - (-y) = 7-10

-3x-y+y=-3

-3x=-3

As we can see, this equation matches the one in option C, meaning that it's our answer!