Odpowiedź:
[tex] \frac{2}{3} x - 0.75 = 0.5x - 1 + 0.25x \\ \frac{2}{3} x - \frac{3}{4} x = - 0.25 \\ 8x - 9x = - 3 \\ x = 3[/tex]
[tex]0.3(3x - 5) + 0.5(2 - x) = 0.2(x - 5) \\ \frac{9}{10} x - 1.5 + 1 - 0.5x = \frac{2}{10} x - 1 \\ 0.2x = - 0.5 \\ 2x = - 5 \\ x = - \frac{5}{2} [/tex]
