Решите уравнение х-х\7=15/7

х - [latex] \frac{x}{7} [/latex] = [latex] \frac{15}{7} [/latex] умножаем каждый множитель на 7 7х - х = 15 6х = 15 х = [latex] \frac{15}{6} [/latex] х = 2,5

[latex]x- \frac{x}{7}= \frac{15}{7} [/latex] [latex]x- \frac{x}{7} - \frac{15}{7}=0[/latex] [latex](1- \frac{1}{7})x- \frac{15}{7}=0[/latex] [latex] \frac{6}{7}x- \frac{15}{7}=0[/latex] [latex] \frac{6}{7}x= \frac{15}{7} [/latex] [latex]x= \frac{15}{7}: \frac{6}{7} [/latex] [latex]x= \frac{15}{7}* \frac{7}{6} [/latex] [latex]x=2,5[/latex] [latex]Otvet:2,5[/latex]