Negative/NegativeDate: 8/4/96 at 16:1:48 From: Jeffrey Paul Goins Subject: Negative/Negative Dear Dr. Math, Why is a negative divided by a negative a positive? Levi Goins Date: 8/5/96 at 11:29:51 From: Doctor Anthony Subject: Re: Negative/Negative Why is a negative divided by a negative positive. Example: (-10)/(-5) = +2 Consider (-10)/(-10) We have a rule that anything divided by itself is 1. If this rule is to be consistent then (-10)/(-10) = 1. So for our problem (-10)/(-5) = 2*(-5)/(-5) = 2*1 = 2. For consistency of the rules we must have neg*neg = pos. -Doctor Anthony, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
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