Odpowiedź :
-2(x + 5) + 10 = 4(2 - 3x) + 12
-2x - 10 + 10 = 8 - 12x + 12
-2x + 12x = 8 + 12 + 10 - 10
10x = 20 / :10
x = 2
1/4x + x + 3/8 = 2(x - 1/2) + 4
1/4x + x + 3/8 = 2x - 1 + 4
1/4x + x - 2x = -1 + 4 - 3/8
- 3/4x = 2 5/8 / * (- 4/3)
x = 7/2
x = 3 1/2