(约分) 35/49 52/39 121/88 120/75 36/54 77/21 (通分) 7/15和14/45 5/24和11/36 2/3,6/7和4/15(约分) 35/49 .52/39.121/88.120/75 .36/54 .77/21 .(通分) 7/15和14/45.5/24和11/36.2/3,6/7和4/15.

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(约分) 35/49 52/39 121/88 120/75 36/54 77/21 (通分) 7/15和14/45 5/24和11/36 2/3,6/7和4/15
(约分) 35/49 .52/39.121/88.120/75 .36/54 .77/21 .(通分) 7/15和14/45.5/24和11/36.2/3,6/7和4/15.

5/7,4/3,11/8,8/5,2/3,11/3
21/45和14/45,15/72和22/72,70/105和90/105和28/105