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분수: 분모가 다른 덧셈4분수4

1
9 4
+
1 5
=
49 20
2
1 4
+
7 2
=
15 4
3
7 2
+
6 8
=
34 8
7
+
6
=
17 4
4
6 8
+
4 7
=
74 56
6
+
4
=
37 28
5
4 7
+
3 5
=
41 35
6
3 5
+
8 3
=
49 15
7
3 8
+
5 5
=
55 40
3
+
5
=
11 8
8
5 5
+
7 3
=
50 15
5
+
7
=
10 3
9
7 3
+
4 6
=
18 6
7
+
4
=
3
10
4 6
+
8 5
=
68 30
4
+
8
=
34 15
11
8 5
+
6 7
=
86 35
12
1 4
+
3 5
=
17 20
13
5 8
+
1 2
=
9 8
14
1 2
+
2 7
=
11 14
15
2 7
+
4 5
=
38 35