8.find the sum of 5.7/9+6.2/3
a.12.1/9 b.12.4/5 c.13.3/4 d.13.4/5
9.add 20.17/20 and 27.11/40
a.47.1/3 b.47.1/2 c.48.1/8 d.48.3/10​