Ibu membeli 5/9kg beras 1/4 kg tepung 1/2 kg telur berapa total belanja ibu ?

total belanja ibu = 5/9 + 1/4 + 1/2
                          = 20/36 + 9/36 + 18/36
                          = (20 + 9 + 18) / 36
                          = 47/36
                          = 1 11/36 kg

5/9+1/4+1/2
9,18,27,36
4,8,12,16,20,24,28,32,36
2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36
= 20/36 + 9/36 + 18/36
=47/36
= 1 11/36