Odpowiedź:
5(x - 2) - 3(1 - 2x) = 4 - (x + 2)
5x - 10 - 3 + 6x = 4 - x - 2
11x - 13 = 2 - x
12 x = 15
x = 5/4
x/3 - 2 = 2x - x+3/6
2x - 12 = 12x - (x + 3)
2x - 12 = 12x - x - 3
2x - 12 = 11x - 3
2x - 11x = -3 + 12
-9x = 9
x = -1
3/5x - 0,4 = 2(0,75 - 1/5x) + 0,1
2/5x - 2/5 = 2(3/4 - 1/5x) + 1/10
3/5x - 2/5 = 3/2 - 2/5x + 1/10
3/5x - 2/5 = 8/5 - 2/5x
3x - 2 = 8 - 2x
5x = 10
x = 2
1/3(x2 + x) + 2/3 = 2(2/3 - 2x) + 11 + 1/3x2
1/3x2 + 1/3x + 2/3 = 4/3 - 4x + 11 + 1/3x2
1/3x + 2/3 = 37/3 - 4x
x + 2 = 37 - 12x
x + 12x = 37 - 2
13x = 35
x = 35/13
