a) 1/3x - 2 = x + 2 | +2
1/3x = x +4 | * 3
x = 3x + 12| -3x
-2x = 12|: (-2)
x = -6
b) 1 - 6/7x = 4/7 |*7
7 - 6x = 4 | -7
-6x = -3 | :(-6)
x = 1/2
c) 6(1/4x - 2 ) = 18
6/4x - 12 = 18 | *4
6x - 48 = 72 | + 48
6x = 120 | :6
x = 20
d) x/6 - 1/6 = 1 | *6
x - 1 = 6 | +1
x = 7
