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분수: 분모가 다른 덧셈2분수4

1
2 4
+
8 5
=
42 20
2
+
8
=
21 10
2
5 7
+
1 5
=
32 35
3
1 5
+
2 6
=
16 30
1
+
2
=
8 15
4
1 4
+
6 3
=
27 12
1
+
6
=
9 4
5
6 3
+
2 2
=
18 6
6
+
2
=
3
6
2 2
+
9 3
=
24 6
2
+
9
=
4
7
9 3
+
5 6
=
23 6
8
9 6
+
2 5
=
57 30
9
+
2
=
19 10
9
2 5
+
1 3
=
11 15
10
1 3
+
6 5
=
23 15
11
5 9
+
1 5
=
34 45
12
1 5
+
7 6
=
41 30
13
6 2
+
1 3
=
20 6
6
+
1
=
10 3
14
9 3
+
7 6
=
25 6
15
8 6
+
1 8
=
35 24