A Fraction Divided By a FractionDate: Wed, 30 Aug 1995 18:52:47 -0700 (MST) From: Petrescu Subject: Answer please Please answer this math problem me and my dad are fighting about. 18/6 divided by 2/3 Sincerely, Alex P. Date: 9/1/95 at 16:16:45 From: Doctor Ken Subject: Re: Answer please Hello! The thing to remember here is that multiplication and division are opposites. Mathematicians call operations like these two "inverse operations." So if you have x divided by y, that's the same as x times 1/y. So there are a couple of ways to do your problem: you could change it to 18/6 times 3/2, and you multiply and cancel to get 9/2. Or you could change the 18/6 at the beginning of the problem to 3, since 18/6 = 3. Or you could do it as a great big complex fraction: 18/6 ---- and then you can multiply it by 6/6, which is 1. 2/3 18/6 6 18 9 ---- * --- = ---- = --- 2/3 6 4 2 Any way you slice it, the answer is 9/2. -Doctor Ken, The Geometry Forum |
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