mishanya27194 2x-80-6x+105=4-535
2x-6x=4-535+80-105
-4x=-556
x=139

polinaberseneva48909

2х-70-6х-105=-531

2х-70-6х=-531+105

2х-70-6х=-426

-4х=-426+70

-4х=-356

Х=-356:(-4)

Х=89