Question
Find the difference of:$\frac{1}{12}$ and $\frac{3}{4}$

Answer

$\frac{1}{12}-\frac{3}{4}$
$=\frac{1\times1}{12\times1}-\frac{3\times3}{4\times3}$
$=\frac{1}{12}-\frac{9}{12}$ $($because $LCM$ of $4$ and $12$ is $12)$
$=\frac{1-9}{12}$
$=\frac{-8}{12}$
$=\frac{-2}{3}$

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