Math Problem Solver

\[ 20 - \frac{25}{4} = \frac{55}{4} = 13.75 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{20}{1}\) and \(\frac{-25}{4}\) is \(4\). \[ \begin{aligned} 20 - \frac{25}{4} &= \frac{20 \cdot 4}{1 \cdot 4} + \frac{-25 \cdot 1}{4 \cdot 1} \\ &= \frac{80 + -25}{4} \\ &= \frac{55}{4} \end{aligned} \]