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분수: 분모가 다른 덧셈7분수2

1
2 5
+
1 3
=
11 15
2
1 3
+
5 7
=
22 21
3
5 7
+
3 4
=
41 28
4
3 4
+
6 8
=
12 8
3
+
6
=
3 2
5
6 8
+
5 3
=
58 24
6
+
5
=
29 12
6
5 3
+
3 5
=
34 15
7
3 5
+
4 4
=
32 20
3
+
4
=
8 5
8
4 4
+
9 7
=
64 28
4
+
9
=
16 7
9
9 7
+
1 6
=
61 42
10
6 2
+
7 9
=
68 18
6
+
7
=
34 9
11
7 9
+
2 2
=
32 18
7
+
2
=
16 9
12
2 2
+
1 7
=
16 14
2
+
1
=
8 7
13
1 7
+
9 5
=
68 35
14
9 5
+
3 8
=
87 40
15
3 8
+
5 5
=
55 40
3
+
5
=
11 8