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Wiki User
16/180 = 4/45
100/180 = 5/9
15/180 = 1/12
9/180 = 1/20
180/210 = 6/7
It is 2 over 3.
2/5 keep dividing it until its to its simplest form :)
8/45
11/90
18/55
1/18
3/5
1/12