Jawabanmu

2014-09-07T20:25:40+07:00
20 3/10 + 31 3/4  = 20 6/20 + 31 15/20 =51 21/20 = 52 1/20
2014-09-07T20:25:48+07:00
20 3/10+31 3/4=20 6/20+31 15/20=51 21/20=52 1/20