Math Problem Solver

\[ \frac{9}{16} - 1 = - \frac{7}{16} = -0.4375 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{9}{16}\) and \(\frac{-1}{1}\) is \(16\). \[ \begin{aligned} \frac{9}{16} - 1 &= \frac{9 \cdot 1}{16 \cdot 1} + \frac{-1 \cdot 16}{1 \cdot 16} \\ &= \frac{9 + -16}{16} \\ &= \frac{-7}{16} \end{aligned} \]