1 1/60
2 1/3=2 4/12 3 3/4=3 9/12
2 4/12+3 9/12=5 13/12=6 1/12
3 1/2=3 5/10 3 3/5=3 6/10
3 5/10+3 6/10= 6 11/10= 7 1/10
6 1/12-7 1/10=1 1/60
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