Сложить дроби 3\49+5\7+4\49

3/49+5/7+4/49=7/49+35/49=42/49=6/7

[latex] \frac{3}{49} + \frac{5}{7} + \frac{4}{49} = \frac{3}{49} + \frac{35}{49} + \frac{4}{49}= \frac{42}{49}=\frac{6}{7}[/latex]