5х-10=7х+4
5х-7х=4+10
-2х=14
х= -7
5(х - 2) = 7х + 4
5х - 10 = 7х + 4
5х - 7х = 10 + 4
- 2х = 14
х = - 7
5х-10=7х+4
5х-7х=4+10
-2х=14
х= -7
5(х - 2) = 7х + 4
5х - 10 = 7х + 4
5х - 7х = 10 + 4
- 2х = 14
х = - 7
ответ : х = - 7