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분수: 분모가 다른 덧셈3분수3

1
3 3
+
5 4
=
27 12
3
+
5
=
9 4
2
5 4
+
4 9
=
61 36
3
4 9
+
2 4
=
34 36
4
+
2
=
17 18
4
1 4
+
7 5
=
33 20
5
7 5
+
3 9
=
78 45
7
+
3
=
26 15
6
3 9
+
4 2
=
42 18
3
+
4
=
7 3
7
4 2
+
9 3
=
30 6
4
+
9
=
5
8
9 3
+
2 7
=
69 21
9
+
2
=
23 7
9
2 7
+
8 6
=
68 42
2
+
8
=
34 21
10
8 6
+
3 5
=
58 30
8
+
3
=
29 15
11
5 6
+
4 3
=
13 6
12
4 3
+
1 9
=
13 9
13
1 9
+
4 3
=
13 9
14
3 6
+
1 4
=
9 12
3
+
1
=
3 4
15
1 4
+
6 5
=
29 20