# math

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ms.sue answer my questions 9 and 7/10 - 5 and 3/4

• math -

First, what is the common denominator for 7/10 and 3/4?

• math -

29/20

• math -

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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