Math Problem Solver

\[ 18.5 - 0.65 = \frac{357}{20} = 17.85 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{18}{1}\), \(\frac{5}{10}\), and \(\frac{-65}{100}\) is \(100\). \[ \begin{aligned} 18.5 - 0.65 &= \frac{18 \cdot 100}{1 \cdot 100} + \frac{5 \cdot 10}{10 \cdot 10} + \frac{-65 \cdot 1}{100 \cdot 1} \\ &= \frac{1800 + 50 + -65}{100} \\ &= \frac{1785}{100} \\&= \frac{357}{20} \end{aligned} \]