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분수: 분모가 다른 덧셈3분수0

1
3 9
+
2 8
=
42 72
3
+
2
=
7 12
2
2 8
+
3 2
=
14 8
2
+
3
=
7 4
3
3 2
+
2 3
=
13 6
4
2 3
+
4 5
=
22 15
5
5 4
+
1 8
=
11 8
6
8 3
+
1 4
=
35 12
7
1 4
+
5 5
=
25 20
1
+
5
=
5 4
8
5 5
+
2 4
=
30 20
5
+
2
=
3 2
9
2 4
+
3 9
=
30 36
2
+
3
=
5 6
10
9 3
+
3 5
=
54 15
9
+
3
=
18 5
11
3 5
+
4 8
=
44 40
3
+
4
=
11 10
12
1 8
+
2 6
=
11 24
13
1 6
+
2 9
=
7 18
14
2 9
+
1 5
=
19 45
15
1 5
+
4 6
=
26 30
1
+
4
=
13 15