If (5^13)(9^7)=3(15^x), what is the value of x?
Choose the correct choice from the following answers
A) 7	B) 9	C) 11	D) 13	E) 15

Rationale: ( 5 ^ 13 ) ( 9 ^ 7 ) = 3 ( 15 ^ x ) = > 5 ^ 13 * 3 ^ 14 = 3 * 3 ^ x * 5 ^ x = > 5 ^ 13 * 3 ^ 14 = 3 ^ ( x + 1 ) * 5 ^ x value of x = 13 answer d
Answer: D