a)
[tex]7x-6 = -6x+7\\\\7x+6x = 7+6\\\\13x= 13 \ \ /:13\\\\x = 1[/tex]
b)
[tex]0,5x + 2 = x \ \ /\cdot 10\\\\5x + 20= 10x\\\\5x-10x = -20\\\\-5x = -20 \ \ /:(-5)\\\\x = 4[/tex]
c)
[tex]-7(2x+1) = 4\\\\-14x-7 = 4\\\\-14x = 4+7\\\\-14x = 11 \ \ /:(-14)\\\\x = -\frac{11}{14}[/tex]
d)
[tex]8 = 6(x-1) - 4x\\\\8 = 6x - 6 - 4x\\\\8 = 2x-6\\\\-2x = -6-8\\\\-2x = -14 \ \ /:(-2)\\\\x = 7[/tex]
