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분수: 분모가 다른 덧셈5분수4

1
5 4
+
2 8
=
12 8
5
+
2
=
3 2
2
2 8
+
1 5
=
18 40
2
+
1
=
9 20
3
1 5
+
5 4
=
29 20
4
4 6
+
1 2
=
7 6
5
1 2
+
9 6
=
12 6
1
+
9
=
2
6
9 6
+
1 4
=
21 12
9
+
1
=
7 4
7
4 2
+
1 3
=
14 6
4
+
1
=
7 3
8
1 3
+
5 7
=
22 21
9
7 3
+
1 5
=
38 15
10
1 5
+
7 4
=
39 20
11
4 7
+
9 2
=
71 14
12
3 2
+
1 8
=
13 8
13
1 8
+
3 3
=
27 24
1
+
3
=
9 8
14
3 3
+
8 9
=
17 9
15
8 9
+
2 5
=
58 45