Math Problem Solver

\[ 1.27 + 5.4 = \frac{667}{100} = 6.67 \]

The sum can be computed by rewriting each term over a common denominator, where the least common denominator of \(\frac{1}{1}\), \(\frac{27}{100}\), \(\frac{5}{1}\), and \(\frac{4}{10}\) is \(100\). \[ \begin{aligned} 1.27 + 5.4 &= \frac{1 \cdot 100}{1 \cdot 100} + \frac{27 \cdot 1}{100 \cdot 1} + \frac{5 \cdot 100}{1 \cdot 100} + \frac{4 \cdot 10}{10 \cdot 10} \\ &= \frac{100 + 27 + 500 + 40}{100} \\ &= \frac{667}{100} \end{aligned} \]