Answer:
x=1
y=7
Step-by-step explanation:
5x-4y=-23
-5x-y=-12
Add the two equations together
5x-4y=-23
-5x-y=-12
------------------
0x -5y = -35
Divide each side by -5
-5y/-5 = -35/-5
y = 7
Now find x
-5x -y = -12
-5x - 7 = -12
Add 7 to each side
-5x-7+7 = -12+7
-5x = -5
Divide by -5
-5x/-5 = -5/-5
x =1
