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분수: 분모가 다른 덧셈4분수4

1
1 2
+
2 3
=
7 6
2
2 3
+
9 4
=
35 12
3
9 4
+
2 6
=
31 12
4
7 6
+
1 3
=
9 6
7
+
1
=
3 2
5
6 3
+
1 2
=
15 6
6
+
1
=
5 2
6
1 2
+
8 5
=
21 10
7
5 2
+
1 3
=
17 6
8
1 3
+
2 9
=
5 9
9
2 9
+
8 4
=
80 36
2
+
8
=
20 9
10
8 4
+
4 7
=
72 28
8
+
4
=
18 7
11
4 7
+
2 8
=
46 56
4
+
2
=
23 28
12
2 8
+
3 3
=
30 24
2
+
3
=
5 4
13
3 2
+
1 9
=
29 18
14
1 9
+
9 3
=
28 9
15
3 9
+
4 4
=
48 36
3
+
4
=
4 3