Odpowiedź:
a) 9x - 4x = 4x + 2 - 4x
5x = 2
b) 2x + 6x = 8 - 6x + 6x
8x = 8
c) 4(x + 7) = -6
4x + 28 = -6
d) 7x = 8 - (x + 6)
7x = 8 - x - 6
e) [tex]\frac{x-7}{3}[/tex] = -4
x - 7 = -12
