Math Problem Solver

\[ \frac{23}{36} + \frac{1}{40} = \frac{239}{360} = 0.663\overline{8} \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{23}{36}\) and \(\frac{1}{40}\) is \(360\). \[ \begin{aligned} \frac{23}{36} + \frac{1}{40} &= \frac{23 \cdot 10}{36 \cdot 10} + \frac{1 \cdot 9}{40 \cdot 9} \\ &= \frac{230 + 9}{360} \\ &= \frac{239}{360} \end{aligned} \]