Question
$\frac{6}{14}-\frac{2}{7}$

Answer

14 is the multiples of 7. So,

$\begin{aligned} \frac{6}{14}-\frac{2}{7} & =\frac{6}{14}-\frac{2 \times 2}{7 \times 2} \\ & =\frac{6}{14}-\frac{4}{14} \\ & =\frac{6-4}{14}=\frac{2}{14}\end{aligned}$

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