Math Problem Solver

\[ 807 - 0.851 = \frac{806149}{1000} = 806.149 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{807}{1}\) and \(\frac{-851}{1000}\) is \(1000\). \[ \begin{aligned} 807 - 0.851 &= \frac{807 \cdot 1000}{1 \cdot 1000} + \frac{-851 \cdot 1}{1000 \cdot 1} \\ &= \frac{807000 + -851}{1000} \\ &= \frac{806149}{1000} \end{aligned} \]