2х-3+(х-2)= 2х-6х+6= -4х+6 (4-х)-(5-2х)= 4х-5х+2= -х+2= 2-х 6+2(1,5-3)= 8*4,5=36
1) 2х-3+(х-2)=2х-3+х-2=х-5 2)(4-х)-(5-2х)=4-х-5+2х= -1+х=х-1 3) 6+2(1,5-3)=6+3-6=3