The larger of two numbers is 15 more than three times the smaller number. If the sum of the two numbers is 63, find the SMALLER NUMBER.

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Can someone me do math because i am having a breakdown rn because i don’t get it

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)