=19 30/36-6 3/36-2 28/36=10 35/36
=11 21/30-5 7/30-3 8/30=3 11/30
=9 28/30-2 6/30-4 21/30=3 1/30
=20 3/8-(5 6/6-2 1/6)=20 3/8-3 5/6=20 9/24-3 20/24=19 33/24-3 20/24=16 13/24
=28 1/20-(6 15/15-2 8/15)=28 1/20-4 7/15=28 3/60-4 28/60=27 63/60-4 28/60=23 35/60=23 7/12
=29 3/25-(3 5/5-2 1/5)=29 3/25- 1 4/5=28 28/25-1 20/25=27 8/25