Odpowiedź:
[tex]a)4(x - 1) = 2(x + 2) \\ 4x - 4 = 2x + 4 \\ 4x - 2x = 4 + 4 \\ 2x = 8 \\ x = 4[/tex]
[tex]b)5(2x - 1) = 3x \\ 10x - 5 = 3x \\ 10x - 3x = 5 \\ 7x = 5 \\ x = \frac{5}{7} [/tex]
[tex]c) - (x + 2) = 4x + 4 \\ - x - 2 = 4x + 4 \\ - x - 4x = 4 + 2 \\ - 5x = 6 \\ x = - \frac{6}{5} [/tex]
[tex]d)0.1x + 0.2 = 1.5 \\ 0.1x = 1.5 - 0.2 \\ 0.1x = 1.3 \\ x = 13[/tex]
