[tex]a)\\\\x=-3\\\\ 4(2x - 3) = 12x \\\\4(2*(-3) - 3) = 12*(-3)\\\\4(-6-3)=-36\\\\-36=-36\\\\L=P\\\\liczba \ x=-3\ spelnia\ to \ rownanie[/tex]
[tex]c)\\\\x=6\\\\5 - 3x = -2x - 1 \\\\5 - 3*6 = -2*6 - 1 \\\\5-18=-12-1\\\\-13=-13 \\\\L=P\\\\liczba \ x=6\ spelnia\ to \ rownanie[/tex]
[tex]e)\\\\x= -1\\\\ 2x^3 - 3x^2 = -1 \\\\ 2 *(-1)^3 - 3*(-1)^2 = -1\\\\-2-3=-1\\\\-5=-1 \\\\L \neq P\\\\liczba \ x=-1\ nie\ spelnia\ podane \ rownanie[/tex]