Okay first you need to add both equations together
7x + 6y = 63
+ - 5x - 6y = -69
—————————
2x = -6
Then divide both sides
x = -3
Then plug -3 back into one of the equations to find y
7(-3) + 6y = 63
= -21 + 6y = 63
—-> 6y = 84
Divide both sides
y = 14
The answer is (-3, 14)