5/12 + 4/16 = ?
\({\color{red}\frac {5}{12}+ \frac {4}{16}}\) = \(\frac {4\times 5+3 \times 4}{3 \times 16}\) = \(\frac {4\times 5+3 \times 4}{3 \times 2^4}\) = \({\color {blue} 5}\) !
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