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Mathematics 15 Online
OpenStudy (anonymous):

5>-3x-1

OpenStudy (anonymous):

First you have to isolate x. Do you know how to do that?

OpenStudy (anonymous):

I call dibs precious32. o.o

OpenStudy (anonymous):

lol go ahead

OpenStudy (marissalovescats):

Welcome to OpenStudy @mkiby! :)

OpenStudy (anonymous):

5>-3x-1 To isolate x, add 1 to both sides. 5 + 1>-3x Now you combine like terms. 6 > -3x Then divide both sides by -3 to remove the -3 from x. -2 > x

OpenStudy (anonymous):

> = < are all just comparisons. You can treat them the same way.

OpenStudy (marissalovescats):

Don't forget that when you divide by a negative number, your inequality sign flips. So in this case the answer would be -2<x and not -2>x

OpenStudy (anonymous):

Thank you. Thats what I came up with but it was marked wrong and the answer they wanted was -2<x

OpenStudy (anonymous):

marissa figured that out. Sorry, at least now I know. :D

OpenStudy (anonymous):

Got it. Now I see it

OpenStudy (anonymous):

Give her a medal.

OpenStudy (anonymous):

x<-2

OpenStudy (marissalovescats):

It can be a tricky rule you forget about, but in inequalities if you have to divide by a negative number to solve for x, you just flip your sign :) I hope you enjoy your future time on OpenStudy! @mkiby

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