Posted by zavier on Sunday, August 21, 2011 at 8:34pm.
First, what is the common denominator for 7/10 and 3/4?
After you post that answer, I'll help you from there.
29/20
Yes. 20 is the common denominator.
7/10 = 14/20
3/4 = 15/20
You need to subtract 5 15/20 from 9 14/20.
We need to make the top fraction larger. So we to subtract 1 from the whole number and add 20/20 to the fraction.
9 14/20 = 8 34/20
8 34/20 - 5 15/20 = 3 19/20
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