Math Problem Solver

\[ 70.25 - 100 = - \frac{119}{4} = -29.75 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{70}{1}\), \(\frac{25}{100}\), and \(\frac{-100}{1}\) is \(100\). \[ \begin{aligned} 70.25 - 100 &= \frac{70 \cdot 100}{1 \cdot 100} + \frac{25 \cdot 1}{100 \cdot 1} + \frac{-100 \cdot 100}{1 \cdot 100} \\ &= \frac{7000 + 25 + -10000}{100} \\ &= \frac{-2975}{100} \\&= - \frac{119}{4} \end{aligned} \]