1/5+3/5= 5/6-1/6= 1/3+1/2= 3/16+5/8= 1-2/7= 1/20+3/4= 3/7-3/7+1/7= 3/4+1/8+1/4=

问题描述:

1
5
+
3
5
=
5
6
-
1
6
=
1
3
+
1
2
=
3
16
+
5
8
=
1-
2
7
=
1
20
+
3
4
=
3
7
-
3
7
+
1
7
=
3
4
+
1
8
+
1
4
=

1
5
+
3
5
=
4
5
5
6
-
1
6
=
2
3
1
3
+
1
2
=
5
6
3
16
+
5
8
=
13
16
1-
2
7
=
5
7
1
20
+
3
4
=
4
5
3
7
-
3
7
+
1
7
=
1
7
3
4
+
1
8
+
1
4
=1
1
8