Решите уравнение: (1/2x + 1/3x + 1/4x) * 6/13=1

( [latex] \frac{1}{2} [/latex]  х  + [latex] \frac{1}{3} [/latex] х + [latex] \frac{1}{4} [/latex] х ) * [latex] \frac{6}{13} [/latex] = 1 ( [latex] \frac{6}{12} [/latex]  х  + [latex] \frac{4}{12} [/latex] х + [latex] \frac{3}{12} [/latex] х ) * [latex] \frac{6}{13} [/latex] = 1 [latex] \frac{13}{12} [/latex]  *  [latex] \frac{6}{13} [/latex] = 1 [latex] \frac{13 * 6}{12 * 13} [/latex]  х = 1 [latex] \frac{1}{3} [/latex]  х = 1 х = 1 : [latex] \frac{1}{3} [/latex] х = 1 * [latex] \frac{3}{1} [/latex] х = 3