You flip the inequality sign when you are dividing or multiplying both sides by a negative.
You also flip the inequality sign when you "swap" the answers on both sides.The other time you flip the inequality sign is when raising both sides to a negative power. e.g. 5>4, but (5^-1)<(4^-1) i.e. 1/5 < 1/4....this is true when both sides of the inequality are either positive or negative, if one side is positive and one side is negative, the inequality sign does not get flipped, e.g. -4<5 and -1/4 < 1/5 (in this case the inequality sign is not flipped)
First answer by ID1150412091. Last edit by Asch13. Contributor trust: 0 [recommend contributor]. Question popularity: 2 [recommend question].
How long has it been since you've done math using inequalities? I was helping my daughter with her homework today and this is what we were doing. The whole point is, you can literally find almost any answer on the internet. Doesn't matter if you don't remember how to do it. You don't have to search for an hour within the text book. Just google it.
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