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분수: 분모가 다른 덧셈2분수3

1
2 3
+
1 4
=
11 12
2
1 4
+
9 6
=
21 12
1
+
9
=
7 4
3
9 6
+
2 8
=
42 24
9
+
2
=
7 4
4
1 8
+
6 5
=
53 40
5
6 6
+
1 4
=
15 12
6
+
1
=
5 4
6
4 5
+
1 3
=
17 15
7
1 5
+
8 2
=
42 10
1
+
8
=
21 5
8
9 5
+
1 3
=
32 15
9
1 3
+
3 6
=
5 6
10
3 6
+
2 9
=
13 18
11
1 2
+
4 4
=
6 4
1
+
4
=
3 2
12
4 4
+
8 3
=
44 12
4
+
8
=
11 3
13
8 3
+
5 9
=
29 9
14
5 9
+
3 8
=
67 72
15
4 4
+
1 8
=
9 8