Question

the product of 21/3 and multiplicative inverse of7/9 is with explanation​

Answer 1

$multiplicative \: inverse \: of \: \frac{7}{9} \: is \: \frac{9}{7} \\ multiplication \: of \: \frac{21}{3} \: and \: \frac{9}{7} \\ = \frac{21}{3} \times \frac{9}{7} \\ = 3 \times 3 \\ = 9$