1:7-3:2-6:5

1:7-3:2-6:5


=15-2 / 8-5 / 6 = 45-24 / 16-24 / 20 = 3 / 8



2-7 / 10-8 / 15


2-7 / 10-8 / 15
=13/10-8/15
=23/30



1-5 of 3 = 7-15 of 5 = 9 of 2-14 = 1 of 5 + 8
4 of 2-9-5 of 9, 11 of 8 - (3 of 8 + 2 of 5) 8 of 13 + 3 of 4 + 5 of 13-0.25
4 / 3 - (2 / 5 + 3 / 10) 5 / 7 + 1 / 4-9 / 14


15 / 3 / 2 / 3 / 30 / 19 / 14 / 5