1.

Find the value of a.5/7^-a =11^3/5^3​

Answer»

ANSWER:

a=3

Step-by-step explanation:

it should be 7 instead of 11.

(5/7)^-a = 7^3/5^3

=> (5/7)^-a= (7/5)^3

=> (7/5)^a= (7/5)^3

=> a= 3

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