Answer:
(3, -9)
Step-by-step explanation:
5x + y = 7
-x - 2y = - 15
What we can do is multiply the second equation by 5, as we try to combine both equations to get rid of x.
5x + y = 6
-5x - 10y = 75
-9y = 81
y = -9
Now we plug y back in.
5x - 9 = 6
5x = 15
x = 3
