Answer:
x = -1
y = 1
Step-by-step explanation:
2y + 7x = -5
5y - 7x = 12
Add both equations to eliminate 7x
7y = 7
Divide both sides by 7 to isolate y
7y/7 = 7/7
y = 1
Now substitute 1 for y in either equation to get x.
Using equation 1, we have
2y + 7x = -5
2 x 1 + 7x = -5
2 + 7x = -5
Subtract 2 from both sides to eliminate 2 on the left
2 - 2 + 7x = -5 - 2
7x = -7
Divide both sides by 7 to isolate x
7x/7 = -7/7
x = -1
x = -1
y = 1
