Odpowiedź:
a) 3x - 5 = 4 + 2x | - 2x
x -5 = 4 | + 5
x = 9
b)-5x + 10 = -2x - 8 | + 8
-5x + 18 = -2x | +5x
18 = -3x | : (-3)
-6 = x
c) -5x - 17 = -9x + 3 | + 17
-5x = - 9x + 20 | +9x
4x = 20 | : 4
x = 5
d) 7x + 14 = 5x - 22 | +22
7x + 36 = 5x | -7x
36 = -2x | : (-2)
-18 = x
e) 2x - 4 + 5x = x + 2
7x - 4 = x +2 | -x
6x -4 = 2 | +4
6x = 6 | :6
x = 1
f) -3 + 2x - 6 = 3 - 4x
-9 + 2x = 3 - 4x | + 9
2x = 12 - 4x | +4x
6x = 12 | : 6
x = 12
Mam nadzieję, że jest dobrze ;)
