Równanie A:
[tex]3x = \frac{1}{4} \ \ \ \ /:3\\x = \frac{1}{12}[/tex]
Równanie B:
[tex]4x\ +5\ =\ 6x+15 \ \ \ \ /-6x\\-2x+5 = 15 \ \ \ \ /-5\\-2x = 10 \ \ \ \ /:(-2)\\x = -5[/tex]
Równanie C:
[tex]x-2\left(3x+3\right)=9\\-5x-6 = 9 \ \ \ \ /+6\\-5x = 15 \ \ \ \ /:(-5)\\x = -3[/tex]
Równanie D:
[tex]\frac{6-x}{4}=\ x-1\\\\\frac{-1}{4} x + \frac{3}{2} = x-1 \ \ \ \ /-x\\\\\frac{-5}{4} x + \frac{3}{2} = -1 \ \ \ \ / -\frac{3}{2} \\\\\frac{-5}{4} x = \frac{-5}{2} \ \ \ \ / \cdot \frac{4}{-5} \\\\x = 2[/tex]
