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분수: 분모가 다른 덧셈3분수1

1
1 9
+
4 2
=
38 18
1
+
4
=
19 9
2
4 2
+
8 3
=
28 6
4
+
8
=
14 3
3
1 3
+
4 5
=
17 15
4
3 5
+
1 4
=
17 20
5
1 4
+
4 3
=
19 12
6
4 3
+
1 7
=
31 21
7
7 7
+
1 2
=
21 14
7
+
1
=
3 2
8
1 2
+
3 5
=
11 10
9
3 5
+
5 4
=
37 20
10
5 4
+
1 7
=
39 28
11
1 7
+
3 9
=
30 63
1
+
3
=
10 21
12
9 5
+
1 7
=
68 35
13
1 7
+
4 3
=
31 21
14
4 3
+
5 9
=
17 9
15
5 9
+
2 4
=
38 36
5
+
2
=
19 18