Posted by JR on Saturday, February 2, 2013 at 11:10pm.
7 2/5  2 3/4 =
I need to show how I got the answer

math  Barb, Saturday, February 2, 2013 at 11:22pm
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 = 1so add 20 to 8, gives 28).
6 28/20  2 15/20 = 4 13/20 
math  JR, Sunday, February 3, 2013 at 6:16pm
Thank you Barb