SOLUTION: why must you reverse the inequality sign when multiplying or dividing both sides by a negative?

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Question 25429: why must you reverse the inequality sign when multiplying or dividing both sides by a negative?
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
Multiplyiing a number by -1 moves it to the other side on the number line.
=)