Question

Fill in the blank box in each of the following:

$\frac{5}{9}=\frac{[]}{81}$

Answer 1

We know that $9\times 9=81$

This means to get denominator $81$ we have to multiply by $9$ in both numerator and denominator..

So, $\frac{5}{9}=\frac{5\times 9}{9\times 9}=\frac{45}{81}$

Hence, $\frac{5}{9}=\frac{\left[45\right]}{81}$.