Odpowiedź:
1.
3x - 2 - x + 3 = -5
2x - 5 = -5 | -5
2x = = -10 | :2
x = -5
2.
2(x - 1) + 3(x+2) = 5(x-1) - x
2x - 2 + 3x + 6 = 5x - 5 - x
5x + 4 = 4x - 5
5x - 4x = -5 - 4
x = -9
3.
15x + 12 + 2 = 14x
15x + 14 = 14x | -14
15x - 14x = -14
x = -14
4.
0.2x - 0.9 = 0.1x + 2 +3x
0.2x - 0.9 = 3.1x +2
0.2x - 3.1x = 2 +0.9
-2.9x = 2.9
x = -1
5.
x - 32 - 4x - 33 = 2
-3x - 65 = 2
-3x = 2 +65
-3x = 65
3x = -67
x = 22,3
LICZĘ NA NAJ
