tolong dibantu yah kak! please..

4,6 kg + 3 1/6 kg= 4 6/10 kg + 3 1/6 kg
= 7 23/30 kg

10 kg - 7 23/30 kg
=2 7/30

2 7/30 : 3 = 67/30 : 90/30
= 23/39 kg
jadi, berat 1 bungkus mentega = 23/39 kg