11x - 4x = 14 20x - 13x - 12x = 6
7x = 14 -5x = 6
x = 2 x = -1,2
9x + 4x = -26 11x + 7x - 24x = 42
13x = -26 -6x = 42
x = -2 x = -7
5/9x-7/4x+17/18x = -1/4 /×36
20x - 63x + 34x = -9
-9x = -9
x = 1
1/6x - 0,82 = 3/8x - 1,37
1/6x = 3/8x - 0,55 /×48
8x=18x - 26,4
10x=26,4
x=2,64
1/9x + 7/18x - 11/27x = 2 1/2 /×54
6x + 21x - 22x = 135
5x = 135
x=27
(четвёртого примера не видно)