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분수: 분모가 다른 덧셈4분수4

1
4 4
+
1 5
=
24 20
4
+
1
=
6 5
2
1 5
+
2 4
=
14 20
1
+
2
=
7 10
3
2 4
+
9 8
=
13 8
4
9 8
+
3 7
=
87 56
5
3 7
+
1 6
=
25 42
6
1 6
+
3 8
=
13 24
7
8 3
+
9 5
=
67 15
8
9 5
+
3 6
=
69 30
9
+
3
=
23 10
9
3 9
+
1 4
=
21 36
3
+
1
=
7 12
10
1 4
+
3 6
=
9 12
1
+
3
=
3 4
11
6 3
+
3 5
=
39 15
6
+
3
=
13 5
12
3 5
+
9 4
=
57 20
13
1 8
+
2 4
=
5 8
14
1 7
+
6 2
=
44 14
1
+
6
=
22 7
15
6 2
+
2 3
=
22 6
6
+
2
=
11 3