Odpowiedź:
a) 1/3x - 2 = x + 2 | * 3
3x - 6 = 3x + 6
3x - 3x = 6 + 6
0x = 12
b) 1 - 6/7x = 4/7 | * 7
7 - 6x = 4
-6x = 4 -7
-6x = 3 | : (-6)
x = 3/6 = 1/2
c) 6(1/4x - 2) = 18
3/2x - 12 = 18 |*2
3x - 24 = 36
3x = 36 + 24
3x = 60 | : 3
x = 20
d) x/6 - 1/6 = 1 |*6
x - 1 = 6
x = 6 + 1
x = 7
e) -2(2x - 1) = x/3
-4x + 2 = x/3 | * 3
- 12x + 6 = x
-12x - x = - 6
-13x = - 6 |: (-13)
x = 6/13
f) 2/5 (3 - x) = -2 |* 5
2(15 - 5x) = - 10
30 - 10x = - 10
- 10x = -10 - 30
- 10x = - 40 |: (-10)
x = 4