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It's not that N itself is a multiple of 30, but rather, that each base in N must be raised to an exponent that is a multiple of 30. So the question is, what do we need to multiply a^3 * b^4 * c^5 by so that each base is raised to a multiple of 30? If we multiply a^3 * b^4 * c^5 by a^27 * b^26 * c^25 we get a^30 * b^30 * c^30, so each base is, in fact, raised to a multiple of 30.didieravoaka wrote:Does anyone can help me figure this solution out?
I know that N has to be a multiple of 30. But how come that we have this answer?
Thanks.
No prob. This is one of the ten or fifteen most frequently asked questions from our practice tests: I feel like I explain it at least once a week to our students!didieravoaka wrote:Thanks guys for the explanation.
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