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Liula [17]
3 years ago
15

-2x+2y=6 7x-8y=-27 what is the solution

Mathematics
1 answer:
navik [9.2K]3 years ago
8 0
-2x+2y=6
7x-8y=-27
5x-6y=-21
-x+y=3
6x-7y=-24
6x-7y=-4(-2x+2y)
6x-7y=8x-8y
-6x from both sides:
-7y=2x-8y
add 8y to both sides:
y=2x
-2x+2y=6
2y-6=2x
2y-6=-12
-6-6=-12
y=-3
x=-6

Hope this helps :)

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