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Algebra 21 Online
OpenStudy (anonymous):

Can someone tell me what I did wrong on this one? Solve

OpenStudy (anonymous):

Choices are : 2 3 6 7 I thought it was 3 but I got it wrong.

OpenStudy (anonymous):

So would the answer be 2?

OpenStudy (anonymous):

Ok i can help wait let me show

OpenStudy (anonymous):

You must cross multiply: 6x-12=3x+9 and work it out from there.

OpenStudy (anonymous):

6x-12=3x+9 -3x -3x ------------ 3x-12=9 +12 +12 ----------- 3x= 21 21/3= 7

OpenStudy (anonymous):

OpenStudy (anonymous):

Thank you both so much.

OpenStudy (anonymous):

No problem, glad we helped!

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