SOLUTION: Why does the inequality sign change when both sides are multiplied or divided by a negative number?

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Question 205542: Why does the inequality sign change when both sides are multiplied or divided by a negative number?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Try it with numbers and you will see why.
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Start with -5 < 10
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Multiply or divide both sides by -1 and you will get
5 > -10
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Cheers,
Stan H.