Answer:
x = -8
y = 7
Step-by-step explanation:
To solve the system of equations, we need to substitute x = -8 on the second equation, so we get:
6x + 9y = 15
6(-8) + 9y = 15
Now, we can solve the equation for y, so:
-48 + 9y = 15
-48 + 9y + 48 = 15 + 48
9y = 63
9y/9 = 63/9
y = 7
So, the solution of the system is x = -8 and y = 7.