2x-(3-6x)=-17
2x-3+6x=-17
8x-3=-17
8x=-17+3
8x=-14
x=-7/4
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2(x+1)=3(x-1)
2x+2=3x-3
2x-3x=-3-2
-x=-5
x=5
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1/5(2x-1)=4
2x-1=20
2x=21,x=21/2, x=10,5
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2/3(4x-1/3)=1/9, 2(4x-1/3)=3/9
8x-2/3=1/3
8x=1/3+2/3, 8x=1
x=1/8
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2(x+1)=4-(1-2x)
2x+2=4-1+2x
2x+2=3+2x
2x-2x=3-2
0.x=1, uravnenie ne imeet rešenie.