Posted by **Bryan** on Wednesday, July 16, 2008 at 8:18pm.

Find another name for the given number, but with the deniominator indicated. Use multiplication by 1.

2/7= ?/14

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**drwls**, Wednesday, July 16, 2008 at 8:29pm
7 ? = 28

? = 4

I don't see what "multiplication by 1" gets you.

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**Bryan**, Wednesday, July 16, 2008 at 8:35pm
What did you get as the answear? and how did u get it?

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**drwls**, Wednesday, July 16, 2008 at 8:45pm
I got 4, by cross-multiplying.

When a/b = c/d, ad = bc

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