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분수: 분모가 다른 덧셈3분수9

1
3 9
+
4 2
=
42 18
3
+
4
=
7 3
2
4 2
+
5 5
=
30 10
4
+
5
=
3
3
5 3
+
1 2
=
13 6
4
1 2
+
5 7
=
17 14
5
5 7
+
6 9
=
87 63
5
+
6
=
29 21
6
6 9
+
2 7
=
60 63
6
+
2
=
20 21
7
2 7
+
9 8
=
79 56
8
8 3
+
1 8
=
67 24
9
1 8
+
9 3
=
75 24
1
+
9
=
25 8
10
9 3
+
4 9
=
31 9
11
4 9
+
2 8
=
50 72
4
+
2
=
25 36
12
2 8
+
9 3
=
78 24
2
+
9
=
13 4
13
4 3
+
5 4
=
31 12
14
5 4
+
7 2
=
19 4
15
2 7
+
3 5
=
31 35