Question

What should be multiply in (3/7)^-2 so it become (4/9)^-1 ?

Answer 1

Let the required no. be x

By question, (3/7)^-2 x = (4/9)^-1

(7/3)^2 x=9/4

49/9 x =9/4

x=9/4×9/49

x= 81/196 =(9/14)^2

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