Question

Fill in the blank box in each of the following:

$\frac{3}{4}=\frac{\left[\right]}{28}$

Answer 1

We know that $4\times 7=28$.

This means to get the denominator $28$ we have to multiply by $7$in both numerator and denominator.

So, $\frac{3}{4}=\frac{3\times 7}{4\times 7}=\frac{21}{28}$

Hence, $\frac{3}{4}=\frac{\left[21\right]}{28}$.