Answers

2014-07-23T19:49:20+08:00
My answer is this:
3/10 + 2/5 + 7/10
2 3 2
2014-07-25T21:32:52+08:00
3/10= 3/10
2/5= + 4/10
       =7/10
first find the LCD!
then add
1 5 1