X + (5*8+1)/8 + (3*6+5)/6 = 30
x + 41*3/24 + 23*4/24 = 30*24/24
x + (123+92)/24 = 720/24
x = (720 - 215)/24 = 505/24 = 21 + 1/24
39:9=4 (ост. 3)
57:10=5 (ост. 7)
31:7=4 (ост. 3)
20:8=2 (ост. 4)
39:5=7 (ост. 2)
87:9=9 (ост. 6)
48:7=6 (ост.6)
63:10=6 (ост. 3)
50:8=6 (ост. 2)
39:10=3 (ост. 9)