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4 votes
!!!!!!!!!!!!!!!!!!!WHEN DO YOU FLIP SIGNS IN INEQUALITIES????????????

User Robjohncox
by
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2 Answers

4 votes
Here is some rules that can help: if a >= b then
a - b >= 0 (subtracting b from both sides)
and -b >= -a (subtracting a from both sides) so that
-a <= -b (rewriting the inequality in reverse)
This shows that when you multiply an inequality by -1 (which is part of what you do when you divide by a negative number), you reverse the inequality.
User Ephtron
by
8.4k points
1 vote
whenever u multiply or divide an inequality by a negative number u must flip the inequality sign
User Keiana
by
8.5k points

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