If 97 and a63 are equivalent fractions, then the value of a is
81
97=a63 are equivalent fractions.
Equivalent fractions are obtained when you divide or multiply both numerator and denominator with the same number.
Here in the denominator, 7 ×9=63
So, 9 (numerator) has to be multiplied by 9 to get a.
Hence, a=9×9=81
Therefore, 9×97×9=8163.