Math Problem Solver

\[ \frac{3}{5} + \frac{2}{7} = \frac{31}{35} = 0.8\overline{857142} \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{3}{5}\) and \(\frac{2}{7}\) is \(35\). \[ \begin{aligned} \frac{3}{5} + \frac{2}{7} &= \frac{3 \cdot 7}{5 \cdot 7} + \frac{2 \cdot 5}{7 \cdot 5} \\ &= \frac{21 + 10}{35} \\ &= \frac{31}{35} \end{aligned} \]