tolong di bantu ya 4 soal ini

39. 5 12/24 - 3 11/12 + 11/18 = 5 1/2 - 3 11/12 + 11/18 = 11/2 - 47/12 + 11/18 = 396/36 - 141/36 + 22/36 = 277/36 = 7 25/36
40. 8 2/6 × 3 6/10 : 12/15 = 8 1/3 × 3 3/5 : 4/5 = 25/3 × 18/5 = 450/15 = 30 × 4/5 = 24
Cuma itu yang bisa saya jawab, semoga membantu