Question

15道分数乘法的计算题，速度！！！！！！！！！！！！！！

9/56 * 9/28 = ?
14/45 * 9/14 = ?
12/35 * 8/63 = ?
20/21 * 8/21= ?
9/70 * 9/35 = ?
9/35 * 9/56= ?
9/280 * 20/63= ?
35/72 * 21/40= ?
8/9 * 8/63= ?
35/36 * 40/63= ?
9/14 * 10/21= ?
9/56 * 15/56= ?
8/105 * 10/63 = ?
45/56 * 8/63= ?
8/63 * 9/35= ?

Answer 1

9/56 * 9/28 = 81/1568
14/45 * 9/14 = 1/5
12/35 * 8/63 = 32/735
20/21 * 8/21= 160/441
9/70 * 9/35 = 81/2450
9/35 * 9/56= 81/1960
9/280 * 20/63= 1/98
35/72 * 21/40= 49/192
8/9 * 8/63= 64/567
35/36 * 40/63= 50/81
9/14 * 10/21= 15/49
9/56 * 15/56= 135/3136
8/105 * 10/63 = 16/1323
45/56 * 8/63= 5/49
8/63 * 9/35= 8/105你确认符号都对吗？有的数很大啊

追问

题是瞎找的，谢

Answer 2

81/1568
1/5
96/2205
160/441
81/2450
81/1960
1/98
49/192
64/567
50/81
15/49
135/3136
16/1323
5/49
8/245

Answer 3

81/1568
1/5
32/735
160/441
81/2450
81/1960
1/98
49/192
64/567
50/81
15/49
135/3136
16/1323
5/49
8/245

Answer 4

15道分数除法的题，速度！！！！！！！！！！！！！！

Answer 5

9/56 * 9/28 = 81/1568;
14/45 * 9/14 = 1/5;
12/35 * 8/63 = 32/735;
20/21 * 8/21= 160/441;
9/70 * 9/35 = 81/2450;
9/35 * 9/56= 81/1960;
9/280 * 20/63= 1/98;
35/72 * 21/40= 49/192;
8/9 * 8/63=64/567;
35/36 * 40/63= 350/567;
9/14 * 10/21= 30/98;
9/56 * 15/56=135/3136;
8/105 * 10/63 =16/1323;
45/56 * 8/63= 5/49;
8/63 * 9/35= 8/245;