Ответ:
2х - 2= 18+4х
2х - 4х= 18+2
-2х= 20
х= 20 : (-2)
х=-10
6х+9= 8х-5
6х-8х= -5-9
-2х=-14
х= -14: (-2)
х=7
-7х - 4= 2х + 14
-7х-2х= 14+4
-9х= 18
х= 18 : (-9)
х= -2
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Ответ:
2х - 2= 18+4х
2х - 4х= 18+2
-2х= 20
х= 20 : (-2)
х=-10
6х+9= 8х-5
6х-8х= -5-9
-2х=-14
х= -14: (-2)
х=7
-7х - 4= 2х + 14
-7х-2х= 14+4
-9х= 18
х= 18 : (-9)
х= -2