Math Problem Solver

\[ 27.93 + 56.42 = \frac{1687}{20} = 84.35 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{27}{1}\), \(\frac{93}{100}\), \(\frac{56}{1}\), and \(\frac{42}{100}\) is \(100\). \[ \begin{aligned} 27.93 + 56.42 &= \frac{27 \cdot 100}{1 \cdot 100} + \frac{93 \cdot 1}{100 \cdot 1} + \frac{56 \cdot 100}{1 \cdot 100} + \frac{42 \cdot 1}{100 \cdot 1} \\ &= \frac{2700 + 93 + 5600 + 42}{100} \\ &= \frac{8435}{100} \\&= \frac{1687}{20} \end{aligned} \]