Odpowiedź:
zad. 1
[tex] \frac{2x - 3}{4} = \frac{1}{2} + x \: \: \: | \times 4 \\ 2x - 3 = 2 + 4x \\ 2x - 4x = 2 + 3 \\ - 2x = 5 \\ x = - \frac{5}{2} [/tex]
zad. 2
[tex]0.4 + 0.25x = - 2 \\ 0.25x = - 2 - 0.4 \\ 0.25x = - 2.4 \\ x = - 9.6[/tex]
zad. 3
[tex] \frac{1}{2} x - 4 = x - 6 \\ \frac{1}{2}x - x = - 6 + 4 \\ - \frac{1}{2}x = - 2 \\ x = 4[/tex]
zad. 4
[tex]2x - \frac{3x + 5}{4} = - \frac{2}{4} x - 1 \\ 8x - (3x + 5 )= - 2x - 4 \\ 8x - 3x - 5 = - 2x - 4 \\ 5x - 5 = - 2x - 4 \\ 7x = 1 \\ x = \frac{1}{7} [/tex]
