Rozwiąż równania : a) 1/3x - 2 = x+2
b) 1 - 6/7x = 4/7
c) 6 ( 1/4x - 2 ) =18
d) 1/6 (x-1) = 1
e) -2 ( 2x - 1 ) = 1/3x
f) 2/5 ( 3 - x ) = -2
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