5/18+7/12=31/36
4 4/9+11 3/7=15 55/63
2 4/45+7/25=2 20/225+63/225=2 83/225
5/6-1/15=25/30-2/30=23/30
9 1/36-5 5/44=3 362/396=3 181/198
10-4 25/64=9 64/64-4 25/64=9 39/64
5/18+7/12=31/36
4 4/9+11 3/7=15 55/63
2 4/45+7/25=2 20/225+63/225=2 83/225
5/6-1/15=25/30-2/30=23/30
9 1/36-5 5/44=3 362/396=3 181/198
10-4 25/64=9 64/64-4 25/64=9 39/64