2 years ago

What mistake did this student make?

Mathematics

1 answer:

Novay_Z [31]2 years ago

7 0

X=-2 not 2.

EXPLANATION:

x-2y=12
-3x+y=-1
x-2y=12
2(-3x+y)=-1
x-2y=12
-6x+2y=-2
-5x=10
5x/-5=10/-5
x=-2

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