Решите ! 1)-4х-11=-5-12 2)3х+11=5х+7(3х-5) 3)3-4(5х+2)=3(7х-2) 4)17-2(3х-5)-5(4х-1)=6х 5)-11+3(х-3)=-8х-9

1) -4х = -17+11
-4х = -6 
2х=3
х= 3/2 = 1,5
2) 3х + 11 = 5х + 21х - 35
3х - 5х - 21х = -35-11
- 23 х = - 46
23х = 46
х=2
3) 3-20х-8=21х-6
-20х-21х=-6-3+8
-41х=-1
41х=1
х= 1/41
4) 17 - 6х+10-20х+5=6х
   -6х-20х-6х=-10-5-17
-32х=-32
32х=32
х=1
5) -11+3х-9=-8х-9
3х+8х=-9+11+9
11х=11
х=1