3/4+5/8=; 2/5+7/15=; 7/16+1/4=; 2/7+1/3=; 5/18+2/3=; 5/6+7/8=; 5/6+2/9=; 1/4+2/5=
3/4+5/8 = 11/8 2/5+7/15 = 13/15 7/16+1/4=11/16 2/7+1/3=13/21 5/18+2/3=17/18 5/6+7/8=41/24 5/6+2/9=19/18 1/4+2/5=13/20