owl32 1) 4/1=4
3+4-1/3=7-1/3=21/3-1/3=20/3
2)6-5/3-1/2=36/6-10/6-3/6=23/6
3)4/6=2/3
2/5+2/3+2/3=2/5+4/3=6/15+20/15=26/15