Mam nadzieję, że wszystko jest w miarę czytelnie. Jak masz pytania to śmiało zadaj je w komentarzu. :D
5.
[tex]1-\frac{6}{7} x=\frac{4}{7}[/tex] /·7
[tex]7-6x=4\\-6x=-3[/tex] /· (-1)
[tex]6x = 3[/tex] /:6
[tex]x = \frac{1}{2}[/tex]
6.
[tex]6(\frac{1}{4} x -2) =18\\\frac{6}{4} x -12 =18[/tex] /·4
[tex]6x - 12 =18\\6x =30\\[/tex] /:6
[tex]x = 5[/tex]
7.
[tex]\frac{x}{6} - \frac{1}{6} =1[/tex] /·6
[tex]x - 1 = 1\\x = 2[/tex]
8.
[tex]-2 (2x-1) = \frac{x}{3} \\-4x +2 = \frac{x}{3}[/tex] /·3
[tex]-12x +6 = x\\-13x = -6\\[/tex]/· (-1)
[tex]13x = 6\\x=\frac{6}{13}[/tex] /:13
9.
[tex]\frac{2}{5} (3-x) = -2\\\frac{6}{5} - \frac{2}{5}x = -2[/tex]/·5
[tex]6 -2x = -10\\-2x = -16[/tex]/· (-1)
[tex]2x = 16 \\x = 8[/tex] /:2
10.
[tex]\frac{3}{4} (2-3x) = -6\\\frac{3}{2}_{/.2} - \frac{9}{4}x = -6\\\frac{6}{4} -\frac{9}{4}x = -6[/tex]/·4
[tex]6-9x=-6\\-9x = -12\\[/tex] /· (-1)
[tex]9x = 12\\[/tex] /:9
[tex]x = \frac{4}{3}[/tex]
