Question

If 7^{x + 3} = 5^{x + 3} then the value of ‘x’ is ……………

A) -3 

B) 3 

C) 2 

D) -2

Answer 1

Correct option is (A) -3

\(7^{x+3}=5^{x+3}\) is true if x+3 = 0

\(\Rightarrow\) x = 0 - 3 = -3

i.e., \(7^{x+3}=5^{x+3}\) is true if x = -3.

Answer 2

Correct option is A) -3