2/1+8/3 =8/7
2/1-8/3=8/1
6/5+10/3=15/17
9/5+3/2=9/11
4/1+7/6=28/31
5/4-8/5=40/7
6/5-10/3=15/8
4/3+6/1=12/11
5/4-3/2=15/2
12/7+4/1=6/5
1-7/3=7/4
2/1-3/1=6/1
9/1+10/1=90/19
9/1-10/1=90/1
4/1+7/1=28/11
4/1-7/1=28/3
5/1+8/1=40/13
5/1-8/1=40/3
8/3+8/1=2/1
3/2+2/1=6/7
9/5-9/2=3/1
1-8/5=8/3
8/5-8/3=4/1
4/1+3/1=12/7
8/5-2/1=8/1
10/7-6/1=15/8
5/1-8/1=40/3
2/1+8/5=8/9
6/5-3/2=6/1
10/3+5/3 =10/9
5/4+4/3 =20/31
8/3-6/1=24/5
6/5-3/2 =6/1
6/5+3/2=2/3
1-5/3=5/2
2/1+8/3+8/3=4/5
9/5+6/1+9/4=6/7
1-5/4+9/4=45/29
3/1+7/2+7/5=3/4
1/4/1+5/2=20/33
10/3+4/3+10/7 =4/7
9/5+（5/4+9/4)=5/9
8/5+（3/2+8/3)=3/5
1-7/2-7/5=0
8/7+（8/1+6/5)=6/11
1-（2/1+6/1)=3/1
1-（2/1-6/1）=3/2
7/5-7/4+2/1=14/9
5/2+3/1-5/1=15/8
9/8-3/1-5/1=45/16
9/8-3/1+9/1=3/2
1+7/2+7/5=2
3/2-（4/1+4/1)=6/1
3/2-4/1+4/1=3/2
10/3-4/3+10/7=4/1
麻烦下次请把分母写右边,分子写左边,这样才容易看
还有我的另一道题麻烦请采纳