Berapa hasil 16 1/4 dikurang 4 2/5 ddi tambah 3 1/2 janggan lupa cara nya??????

16 1/4 – 4 2/5 + 3 1/2
= 16,25 – 4,4 + 3,5
= 11,85 + 3,5
= 15,35

16 1/4 – 4 2/5 + 3 1/2
=16-4+3 5/20 – 8/20 + 10/20
=15 7/20