Solve using elimination.

9x + 3y = - 6

9x + 7y = 10

Step-by-step explanation:

Given

9x + 3y = - 6 ... equation 1

9x + 7y = 10 ... equation 2

Now subtracting both equations we get

9x + 3y = - 6

9x + 7y = 10

- - = -

-4y = - 16

Therefore y = 4

Now putting y = 4 in equation 1

9 * 4 + 3y = - 6

36 + 3y = - 6

3y = - 6 - 36

3y = - 42

Therefore y = - 14