Question

-2х+8х=-12
5х-3х=15-17
3х-5х=-21+33
-7х-9х=-40+8

Answer 1

-2х+8х=-12
6х=-12
х=-2

5х-3х=15-17
2х=-2
х=-1

3х-5х=-21+33
-2х=12
х=-6

-7х-9х=-40+8
-16х=-32
х=2

Answer 2

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