ДАЮ 100 БАЛЛОВ!!ПОМОГИТЕ!!!!СРОЧНО!!! НОМЕР 715!!!

Первое уравнение: [latex]1) \frac{3}{8} x- \frac{3}{4} = \frac{3x-6}{8} [/latex] [latex]2) \frac{3}{4} * \frac{8}{3x-6}= \frac{2}{x-2} [/latex] [latex]3) \frac{1}{2} + \frac{1}{6} = \frac{2}{3} [/latex] [latex]4) \frac{2}{x-2} = \frac{2}{3} =\ \textgreater \ x-2=3 =\ \textgreater \ x=5[/latex] Второе уравнение: [latex] 1) \frac{1}{2} x+ \frac{1}{3} = \frac{3x+2}{6} [/latex] [latex]2) \frac{2}{3} * \frac{6}{3x+2} = \frac{4}{3x+2} [/latex] [latex]3) \frac{1}{30} + \frac{1}{6} = \frac{1}{5} = \frac{4}{20}[/latex] [latex]4) \frac{4}{3x+2}=\frac{4}{20} =\ \textgreater \ 3x+2=20 =\ \textgreater \ 3x=18 =\ \textgreater \ x=6[/latex]  Третье уравнение: [latex]1) \frac{1}{4} x - \frac{3}{5} = \frac{5x-12}{20} [/latex] [latex]2) \frac{7}{15} * \frac{20}{5x-12} = \frac{28}{15x-36} [/latex] [latex]3) \frac{5}{6} - \frac{1}{2} = \frac{2}{6} = \frac{28}{84} [/latex] [latex]4) \frac{28}{15x-36} = \frac{28}{84} =\ \textgreater \ 15x-36=84 =\ \textgreater \ 15x = 120 =\ \textgreater \ x=8[/latex]