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분수: 분모가 다른 덧셈3분수2

1
3 2
+
9 3
=
27 6
3
+
9
=
9 2
2
9 3
+
1 2
=
21 6
9
+
1
=
7 2
3
1 2
+
2 8
=
6 8
1
+
2
=
3 4
4
2 8
+
4 2
=
18 8
2
+
4
=
9 4
5
2 4
+
9 3
=
42 12
2
+
9
=
7 2
6
9 3
+
5 2
=
33 6
9
+
5
=
11 2
7
7 2
+
1 5
=
37 10
8
1 5
+
5 4
=
29 20
9
4 5
+
7 4
=
51 20
10
7 4
+
1 3
=
25 12
11
1 3
+
4 4
=
16 12
1
+
4
=
4 3
12
4 4
+
6 5
=
44 20
4
+
6
=
11 5
13
6 5
+
7 3
=
53 15
14
3 5
+
1 4
=
17 20
15
2 4
+
1 2
=
4 4
2
+
1
=
1