Question
Reduce to a single fraction:
$1 \frac{1}{3}+2 \frac{1}{4}$

Answer

$ 1 \frac{1}{3}+2 \frac{1}{4}=\frac{4}{3}+\frac{9}{4} $
$=\frac{4 \times 4}{3 \times 4}+\frac{9 \times 3}{4 \times 3}=\frac{16}{12}+\frac{27}{12}($ LCM of 3 and $4=12)$
$ =\frac{16+27}{12}=\frac{43}{12}=3 \frac{7}{12} $

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