Math Problem Solver

\[ 6\frac{2}{5} + 7\frac{1}{2} = \frac{139}{10} = 13.9 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{6}{1}\), \(\frac{2}{5}\), \(\frac{7}{1}\), and \(\frac{1}{2}\) is \(10\). \[ \begin{aligned} 6\frac{2}{5} + 7\frac{1}{2} &= \frac{6 \cdot 10}{1 \cdot 10} + \frac{2 \cdot 2}{5 \cdot 2} + \frac{7 \cdot 10}{1 \cdot 10} + \frac{1 \cdot 5}{2 \cdot 5} \\ &= \frac{60 + 4 + 70 + 5}{10} \\ &= \frac{139}{10} \end{aligned} \]