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분수: 분모가 다른 덧셈3분수1

1
1 2
+
5 7
=
17 14
2
7 2
+
1 7
=
51 14
3
1 7
+
2 9
=
23 63
4
2 9
+
1 5
=
19 45
5
1 5
+
8 2
=
42 10
1
+
8
=
21 5
6
8 2
+
1 5
=
42 10
8
+
1
=
21 5
7
1 5
+
8 4
=
44 20
1
+
8
=
11 5
8
8 4
+
6 3
=
48 12
8
+
6
=
4
9
6 3
+
8 2
=
36 6
6
+
8
=
6
10
8 9
+
1 4
=
41 36
11
4 3
+
1 5
=
23 15
12
1 5
+
4 6
=
26 30
1
+
4
=
13 15
13
4 6
+
6 8
=
34 24
4
+
6
=
17 12
14
6 8
+
5 4
=
16 8
6
+
5
=
2
15
5 4
+
4 3
=
31 12