Question

find the product of 7 by9 and the multiplicative invers of 343 by 243

Answer 1

7/9* 243/343
after cancellation

=27/49

Answer 2

multiplicative inverse of 343/243 = 243/343
7/9 *243/343
=7/3² * 3^5 / 7³
=3³/7²
=27/49