Z= m -x , for x help plz

If m 17 27 90 63 ** picture is attached

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

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)