Question

If $\frac{9}{7}$ and $\frac{a}{63}$ are equivalent fractions, then the value of 'a' is ___ .

Answer 1

$\frac{9}{7}$ and $\frac{a}{63}$ are equivalent fractions.
$⟹9\times 63=a\times 7.$

Solving, we get a = 81.