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2x+6=10
2x=10-6
2x=4 |:2
x=2
b)3(x-1)+2=8
3x-3+2=8
3x=8+1
3x=9 |:3
x=3
c)2(13-x)-9=1
26-2x-9=1
-2x=1-17
-2x=-16 |:-2
x=8
d)3(1-x)+2=-7
3-3x+2=-7
-3x=-7-5
-3x=-12|:-3
x=4
e)3(x+3)=2(x+4)+x+1
3x+9=2x+8+x+1
3x-2x-x=8+1-9
0x=0
f)4(3x+2)+5(2x+3)=-(2x+13)
12x+8+10x+15=-2x-13
12x+10x+2x=-13-15-8
24x=-36|:24
x=-1,5
g)4(x-2)-2(x-4)=5(x+1)-3x
4x-8-2x+8=5x+5-3x
4x-2x-5x+3x=5
0x=5
h)2x-8=4x-2+6x+6
2x-4x-6x=4+8
-8x=12|:-8
x=-1,5