3 3/4 + 5 6/7= 1 4/5 + 3 3/4 = 2 3/5 - 1 2/3 = 5 2/6 - 2 1/4 =

3 3/4+5 6/7=3 21/28+5 24/28=9 17/28 1 4/5+3 3/4=1 16/20+3 15/20=5 11/20 2 3/5- 1 2/3=2 9/15-1 10/15=1 24/15-1 10/15=14/15 5 2/6-2 1/4=5 8/24- 2 6/24=3 2/24=3 1/12