1.
[tex]6x-4x+6 = 2\\\\2x = 2-6\\\\2x = -4 \ \ /:2\\\\x = -2[/tex]
2.
[tex]3x - 20 + x = 40\\\\4x = 40+20\\\\4x = 60 \ \ /:4\\\\x = 15[/tex]
3.
[tex]-2x+4+12x-6 = 18\\\\10x-2 = 18\\\\10x = 18+2\\\\10x = 20 \ \ /:10\\\\x = 2[/tex]
4.
[tex]8x+12-2x+8 = 0\\\\6x+20 = 0\\\\6x = -20 \ \ /:6\\\\x = -\frac{10}{3}\\\\x = -3\frac{1}{3}[/tex]
5.
[tex]-5x-7+9x-4= 0\\\\4x-11 = -5\\\\4x = -5+11\\\\4x = 6 \ \ /:6\\\\x = \frac{3}{2} = 1,5[/tex]
