Ответ:
4-2х-6=7х+12
-2-2х=7х+12
-2х-7x=12+2
-9x=14
x= -14/9
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4-2x-6=7x+12
4-6-12=7x+2x
-14=9x
x=-14/9
Ответ:
4-2х-6=7х+12
-2-2х=7х+12
-2х-7x=12+2
-9x=14
x= -14/9