25-(7-2х)=5х 3*(2х-9)=5*(х-4) 5-3х=2х-8 7*(3-2х)=15*(1-х) 2х+40=х+14 7х-(3+2х)=х+9 Помогитеееее
25-(7-2х)=5х 25-7+2х-5х=0 18-3х=0 -3х=-18 х=6