4^2x+3=64^x-7
4 raised to the power of 2x+ 3= 64 raised to the power of x-7
Solve for x

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)