7 2/5 - 2 3/4 =

I need to show how I got the answer

3 answers

The LCD is 20.
You will get 7 8/20 - 2 15/20.
In the fraction, you can't subtract 15 from 8. Therefore you have to borrow 1 from 7. (20/20 = 1--so add 20 to 8, gives 28).

6 28/20 - 2 15/20 = 4 13/20

Thank you Barb

wow

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