15 2 per 9 - 3 5 per 12 =

[tex]15 \frac{2}{9} - 3 \frac{5}{12} = \frac{137}{9} - \frac{41}{12} = \frac{1103 - 246}{72} = \frac{857}{12} = 71 \frac{5}{12} [/tex]
setau saya seperti itu,maaf jika ada kesalahan