1. х+5-2(4-х)-х-4=х+5-8+2х-х-4=2х-7
2.4(х+4)-5(2-х)-(5+4)х-3=4х+16-10+5х-9х-3=3
3.3(х+4)-3(5-х)-х-3=3х+12-15+3х-х-3=5х-6
4.(х+3)-(2-х)-(1+4)х-2=х+3-2+х-5х-2=-3х-1
5.3(х+5)-4(5-х)-(4+3)х-1=3х+15-20+4х-7х-1=-6
6.3(х+2)-4(1-х)-х-4=3х+6-4+4х-х-4=6х-2=2*(х-3)
7.4(х+2)-4(2-х)-(4+4)х-3=4х+8-8+4х-8х-3=-3
8.5(х+3)-3(1-х)-х-3=5х+15-3+3х-х-3=7х+9
9.2(х+4)-4(2-х)-(4+2)х-1=2х+8-8+4х-6х-1=-1
10.4(х+1)-(5-х)-х-3=4х+4-5+х-х-3=4х-4=4*(х-1)