John's age is 4 more than 3 time Mike's age. If their sum is 20, how old are Mike and John?
1 answer:
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The volume of a rectangular prism is its length times width times height, or algebraically, 
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. It seems that the book wants you to simplify by bringing the 6 up to the denominator. Recall the rule 
, if n is non-negative. The opposite applies so that 
. For your final answer, you write 
. This corresponds to answer choice B.
