Odpowiedź:
[tex] \frac{x - 2}{3} = \frac{2x + 7}{5} \\ 5(x - 2) = 3(2x + 7) \\ 5x - 10 = 6x + 21 \\ 5x - 6x = 21 + 10 \\ - x = 31 \\ x = - 31[/tex]
