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3x - 6x + 6 = 3x - 6
-6x = -12
x = 2
d) -5x+2(1-x)=-x-2(x=1)
-5x + 2 - 2x = -x -2x +2
-4x = 0
x = 0
b)2x-8+x=-2x+10 5x=18|:5 x=3,6
c)