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7x - 6 = -6x + 7
7x + 6x = 7 + 6
13x = 13 /:13
x = 1
b)
8 = 6(x-1) - 4x
8 = 6x - 6 - 4x
-2x = -14 /:(-2
x = 7
c)
2(1-x) = 6(2x-2)
2 - 2x = 12x - 12
-14x = -14 /:(-14
x = 1
7x + 6x = 7 +6
13x = 13
x = 1
b) 8 = 6x - 6 -4x
8 + 6 = 6x -4x
14 = 2x
x = 7
c) 2 - 2x = 12x - 12
2 + 12 = 12x + 2x
14=14x
x = 1