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Mathematics 19 Online
OpenStudy (anonymous):

-50<4x-14<-26

OpenStudy (stefrheart):

you need to make it into 2 inequalities

OpenStudy (stefrheart):

-50<4x-14 and 4x-14<-36

OpenStudy (anonymous):

no, not really you need to add 14 and then divide by 4

OpenStudy (anonymous):

I did that and I got 9>x>-3, but it says its wrong? What did I do wrong?

OpenStudy (stefrheart):

Well i was taught to separate it into two different equations..

OpenStudy (aum):

-50 < 4x -14 < -26 +14 +14 +14 -36 < 4x < -12 /4 /4 /4 -9 < x < -3

OpenStudy (stefrheart):

She said it was wrong though

OpenStudy (aum):

Our solutions are different.

OpenStudy (stefrheart):

oh whoops i didnt see the -9

OpenStudy (aum):

And she has the less than and greater than reversed.

OpenStudy (anonymous):

thank you!

OpenStudy (aum):

you are welcome.

OpenStudy (anonymous):

well its supposed to be reversed because when you divide you have to reverse the signs

OpenStudy (aum):

No. Only when you multiply or divide by a NEGATIVE you need to reverse them.

OpenStudy (stefrheart):

That only applies when you are dividing by a negative number

OpenStudy (anonymous):

oh that makes more sense

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