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분수: 분모가 다른 덧셈2분수7

1
1 9
+
3 7
=
34 63
2
3 7
+
7 6
=
67 42
3
7 6
+
2 4
=
20 12
7
+
2
=
5 3
4
2 4
+
1 5
=
14 20
2
+
1
=
7 10
5
1 5
+
7 3
=
38 15
6
3 2
+
1 4
=
7 4
7
1 4
+
5 6
=
13 12
8
6 4
+
1 7
=
46 28
6
+
1
=
23 14
9
1 2
+
8 5
=
21 10
10
8 5
+
5 8
=
89 40
11
5 8
+
2 5
=
41 40
12
4 5
+
5 2
=
33 10
13
2 8
+
1 6
=
10 24
2
+
1
=
5 12
14
4 3
+
1 9
=
13 9
15
9 4
+
1 7
=
67 28