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OpenStudy (anonymous):
If -4x<-20 then x < 5. Is it correct??
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jimthompson5910 (jim_thompson5910):
close the sign will flip when you divide both sides by a negative number
jimthompson5910 (jim_thompson5910):
the sign will also flip if you multiply both sides by a negative number
hero (hero):
Given: -4x < -20 Add 20 to both sides: -4x + 20 < 20 - 20 -4x + 20 < 0 Add 4x to both sides: 4x - 4x + 20 < 0 + 4x 20 < 4x Divide both sides by 4 20/4 < (4x)/4 5 < x
OpenStudy (anonymous):
Thx
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