Math Problem Solver

\[ -1 - \frac{1}{4} = - \frac{5}{4} = -1.25 \]

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