Math Problem Solver

\[ -3 - \frac{3}{4} = - \frac{15}{4} = -3.75 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{-3}{1}\) and \(\frac{-3}{4}\) is \(4\). \[ \begin{aligned} -3 - \frac{3}{4} &= \frac{-3 \cdot 4}{1 \cdot 4} + \frac{-3 \cdot 1}{4 \cdot 1} \\ &= \frac{-12 + -3}{4} \\ &= \frac{-15}{4} \end{aligned} \]