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분수: 분모가 다른 덧셈7분수3

1
7 3
+
2 7
=
55 21
2
2 7
+
4 3
=
34 21
3
4 3
+
8 2
=
32 6
4
+
8
=
16 3
4
8 2
+
5 7
=
66 14
8
+
5
=
33 7
5
5 7
+
2 5
=
39 35
6
2 5
+
3 7
=
29 35
7
3 7
+
1 5
=
22 35
8
1 5
+
4 4
=
24 20
1
+
4
=
6 5
9
4 4
+
8 6
=
28 12
4
+
8
=
7 3
10
8 6
+
1 9
=
26 18
8
+
1
=
13 9
11
1 9
+
2 7
=
25 63
12
2 7
+
7 4
=
57 28
13
4 2
+
1 6
=
13 6
14
3 5
+
1 4
=
17 20
15
1 4
+
2 7
=
15 28