Math Problem Solver

\[ 4 - 0.65 = \frac{67}{20} = 3.35 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{4}{1}\) and \(\frac{-65}{100}\) is \(100\). \[ \begin{aligned} 4 - 0.65 &= \frac{4 \cdot 100}{1 \cdot 100} + \frac{-65 \cdot 1}{100 \cdot 1} \\ &= \frac{400 + -65}{100} \\ &= \frac{335}{100} \\&= \frac{67}{20} \end{aligned} \]