Math Problem Solver

\[ \frac{-3}{5} + \frac{7}{-10} = - \frac{13}{10} = -1.3 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{-3}{5}\) and \(\frac{7}{-10}\) is \(10\). \[ \begin{aligned} \frac{-3}{5} + \frac{7}{-10} &= \frac{-3 \cdot 2}{5 \cdot 2} + \frac{7 \cdot -1}{-10 \cdot -1} \\ &= \frac{-6 + -7}{10} \\ &= \frac{-13}{10} \end{aligned} \]