Question

find x so that (5/7)-³×(5/7)-¹¹=(5/7)⁷x​

Answer 1

Step-by-step explanation:

(5/7)-³×(5/7)-¹¹=(5/7)⁷x

( 5/7 )^3+11 = (5/7)^7x = (5/7)^14= (5/7)^14x

On comparing the powers , We get

14 x = 14

x = 14/14 = 1

x= 1 ANS.