861.1
3x-1=2(x-2)
3x-1=2x-4
3x-2x=-4+1
x=-3
861.2
3(x+5)=7-5x
3x+15=7-5x
3x+5x=7-15
8x=-8
x=-8:8
x=-1
861.3
19(y-9)=3(y+7)
19y-171=3y+21
19y-3y=21+171
16y=192
y=192:16
x=12
861.4
4(x-9)=3(x-8)
4x-36=3x-24
4x-3x=-24+36
x=12
861.5
3(2x-9)=5(x-4)
6x-27=5x-20
6x-5x=-20+27
x=7
861.6
7(3-2x)=15(1-x)
21-14x=15-15x
-14x+15x=15-21
x=-6
862.1
7x-(3+2x)=x+9
7x-3-2x=x+9
5x-x=9+3
4x=12
x=12:4
x=3
862.2
13-(2x-5)=x-3
13-2x+5=x-3
-2x-x=-3-18
-3x=-21
x=-21:(-3)
x=7
862.3
3x-(10-9x)=22x
3x-10+9x=22x
12x-22x=10
-10x=10
x=10:(-10)
x=-1
862.4
26-(17-2x)=5x
26-17+2x=5x
2x-5x=-9
-3x=-9
x=-9:(-3)
x=3