Question

数学题答案了？

Answer 1

Answer 2

2，=35/42-2/42=33/42=11/14
3,=45/70-7/70=38/70=19/35
4，=15/42-7/42=8/42=4/21
5,=16/42-7/42=9/42=3/14
6,=14/30-5/30=9/30=3/10
7，=5/30-2/30=3/30=1/10
8，=55/66-9/66=46/66=23/33
9，=27/42-7/42=20/42=10/21
10，=14/30-9/30=5/30=1/6
11,=9/30-5/30=4/30=2/15
12,=55/70-7/70=48/70=24/35
13,=15/66-11/66=4/66=2/33
14,=5/30-3/30=2/30=1/15
15,=25/30-3/30=21/30=7/10
16,=33/42-7/42=26/42=13/21
17,=21/30-5/30=16/30=8/15
18,=22/42-7/42=15/42=5/14
19,=10/42-7/42=3/42=1/14
20,=35/42-3/42=32/42=16/21
好累，请你一定采纳，给我一个心理平衡，谢谢