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분수: 분모가 다른 덧셈3분수5

1
3 5
+
7 4
=
47 20
2
7 4
+
4 8
=
18 8
7
+
4
=
9 4
3
4 8
+
1 4
=
6 8
4
+
1
=
3 4
4
1 4
+
8 5
=
37 20
5
5 8
+
9 4
=
23 8
6
8 4
+
1 2
=
10 4
8
+
1
=
5 2
7
1 7
+
2 6
=
20 42
1
+
2
=
10 21
8
2 6
+
8 5
=
58 30
2
+
8
=
29 15
9
8 5
+
5 3
=
49 15
10
5 3
+
4 7
=
47 21
11
4 7
+
6 8
=
74 56
4
+
6
=
37 28
12
3 8
+
1 5
=
23 40
13
5 8
+
1 9
=
53 72
14
1 9
+
2 3
=
7 9
15
2 3
+
3 4
=
17 12