Answer:
y = -3 and x = -24 or (-24, -3)
Step-by-step explanation:
to solve for y...
put 8y in for x because x=8y
and x=4y-12 (I just moved the twelve to the other side of the equal sign)
so,
8y = 4y - 12
8y-4y = -12
4y = -12
divide by for to get...
y = -3
to solve for x...
plug -3 in for y because y = -3
x = 8(-3)
x = -24
you can do the same in the other equation
x = 4(-3) -12
x = -24
[Answer] y = -3 and x = -24 or (-24, -3)
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(I have verified this answer on an online calculator)