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분수: 분모가 다른 덧셈2분수0

1
2 7
+
1 3
=
13 21
2
1 3
+
8 4
=
28 12
1
+
8
=
7 3
3
4 6
+
1 3
=
6 6
4
+
1
=
1
4
2 3
+
5 4
=
23 12
5
5 4
+
2 3
=
23 12
6
2 3
+
4 5
=
22 15
7
5 4
+
1 9
=
49 36
8
1 9
+
6 5
=
59 45
9
6 5
+
1 2
=
17 10
10
1 2
+
3 7
=
13 14
11
3 7
+
5 2
=
41 14
12
5 2
+
8 9
=
61 18
13
5 9
+
7 4
=
83 36
14
7 4
+
6 6
=
33 12
7
+
6
=
11 4
15
6 6
+
5 7
=
72 42
6
+
5
=
12 7