Posted by **adore001** on Tuesday, August 24, 2010 at 7:32pm.

Can someone please help me with this math problem. My teacher is looking for me to show my work, but I don't how to solve the problem to show my work. Please help!!! The problem is 2 1/2 + 3 1/4 + 3 5/8. Thank you for your help.

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**Ms. Sue**, Tuesday, August 24, 2010 at 7:40pm
2 1/2 + 3 1/4 + 3 5/8

First you need to find the common denominator -- which is 8.

Then convert each fraction to the common denominator.

2 1/2 = 2 4/8

3 1/4 = 3 2/8

Add:

2 4/8 + 3 2/8 + 3 5/8

What do you get?

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**adore001**, Tuesday, August 24, 2010 at 7:59pm
Hi Sue,

Thanks for responding so promptly. After adding the problem I got 8 11/8 but my answer isn't one of the multiple choices. What am I doing wrong now? The multiple choices are 10 3/8, 9 3/8, 7 3/8 or 8 3/8. Thanks again for your help.

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**Ms. Sue**, Tuesday, August 24, 2010 at 8:03pm
Your answer of 8 11/8 is right. But you need to reduce or simplify it.

8 11/8 = 9 3/8

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**adore001**, Tuesday, August 24, 2010 at 8:49pm
Sue, thank you so very much. I now will practice this problem for future references. Thanks again.

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**Ms. Sue**, Tuesday, August 24, 2010 at 8:52pm
You're welcome, Adore.

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**Martha**, Saturday, March 16, 2013 at 12:19am
what precent of 3.5 is 7.2? show your work please.

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