Question

-2х+8х=-12 надо решить))
5х-3х=15-16
3х-5х=-21+33
-7х-9х=-40+8

Answer 1

5х-3х=15-16
2x=-1
x=-1:2
x=-0,5
=========
3х-5х=-21+33
-2x=22
x=22:(-2)
x=-11
===============
-7х-9х=-40+8
-16x=32
x=32:(-16)
x=-2
==========

Answer 2

3х-5х=-21+33
-2x=12
x=12:(-2)
x=-6

Answer 3

-7х-9х=-40+8
-16x=-32
x=-32:(-16)
x=2

Answer 4

-2x+8x=-12
6x=-12
x=-12:6
x=-2