5x+6-(3x-4)=x-3-(2x-4)
................................
5х+6-(3х-4)=х-3-(2х-4)
5х+6-3х+4 =х-3-2х+4
2х+10 = 1-х
2х+ х =1-10
3х = -9
х= -9÷3
х= -3