Math Problem Solver

\[ \frac{1}{2} + \frac{3}{8} + \frac{-1}{4} = \frac{5}{8} = 0.625 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{1}{2}\), \(\frac{3}{8}\), and \(\frac{-1}{4}\) is \(8\). \[ \begin{aligned} \frac{1}{2} + \frac{3}{8} + \frac{-1}{4} &= \frac{1 \cdot 4}{2 \cdot 4} + \frac{3 \cdot 1}{8 \cdot 1} + \frac{-1 \cdot 2}{4 \cdot 2} \\ &= \frac{4 + 3 + -2}{8} \\ &= \frac{5}{8} \end{aligned} \]