Odpowiedź:
a) -5x + 3 = -x - 7 / +x
-4x + 3 = -7 / - 3
-4x = -10 / : -4
x = 2,5
b) 6 - x = 4x + 1 / +x
6 = 5x + 1 / -1
5 = 5x / :5
x = 1
c) 2x - 5 = 3x + 4 / -2x
-5 = x + 4 / -4
x = -9
d) 4(3x-2) + 5 = -(-2x + 7) - 1
12x - 8 + 5 = 2x - 7 - 1
12x - 3 = 2x - 8 / - 2x
10x - 3 = -8 / +3
10x = -5 / : 10
x = -0,5
