Question

(5) If ( 9/7 )3 x ( 49/81 ) 2x-6= (7/9)9, the value of x is
(A) 12
(B) 9
(C) 8
(D) 6​

Answer 1

Answer:

A. 12 is a correct answer friend

Answer 2

Answer:

d

Step-by-step explanation:

(9/7)3^(49/81) 2x-6=(7/9)9

We know that reciprocal of 9/73is(7/9)-3

(49/81)2x-6= ((7/9)2)2x-6

All the bases are same, hence equating the powers we get,

-3+4x-12=9

4x=9+15

4x=24

x=6