Question

Subtract :

$\frac{73}{7}-\frac{13}{21}$

Answer 1

Given, $\frac{73}{7}-\frac{13}{21}$

$$\begin{gathered} =\frac{73}{7}-\frac{13}{21} \\ =\frac{(73\times 3)-13}{21} \\ \Rightarrow \frac{219-13}{21}=\frac{206}{21} \end{gathered}$$ $($ ∵ LCM of $7,21$is$21)$