2 answers:
Answer:
x = -9, y =3
Step-by-step explanation:
x + 2y = -3
x - y = -12
Subtract to two equations to eliminate x
x + 2y = -3
-x + y = 12
---------------------
3y = 9
Divide each side by 3
3y/3 = 9/3
y = 3
Now we can find x
x-y =-12
x - 3 = -12
Add 3 to each side
x-3+3 = -12+3
x = -9
Answer:
(-9,3)
Step-by-step explanation:
x + 2y = -3
x = -3 - 2y
x - y = -12
x = y - 12
-3 - 2y = y - 12
3y = 9
y = 3
x = 3 - 12
x = -9
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