punya 3 6/8 kg gula pasir ia membeli lagi 6 3/7 gula pasir jika gula pasir terpakai 5,8 kg berapa sisanya​

3 6/8 + 6 3/7 – 5,8

= (30/8 + 45/7) – 5,8

= (15/4 + 45/7 = 105 + 180/28 = 285/28) – (5,8 = 58/10 = 29/5)

= 285/28 – 29/5

= 1.425 – 812/140

= 613/140

= 4 53/140 kg atau 4,37 kg