[tex]2(2x+3)=4\\\\4x + 6 = 4\\\\4x = 4-6\\\\4x = -2 | : 4\\\\x = - \frac{1}{2}[/tex]
[tex]4(5-12x)=8\\\\20 - 48x = 8\\\\-48x = 8 - 20\\\\-48x = -12 |:(-48)\\\\x = \frac{1}{4}[/tex]
W pierwszym -1/2
W drugim 1/4
