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분수: 분모가 다른 덧셈7분수0

1
7 5
+
8 4
=
68 20
7
+
8
=
17 5
2
1 4
+
7 2
=
15 4
3
7 2
+
5 6
=
26 6
7
+
5
=
13 3
4
1 9
+
4 4
=
40 36
1
+
4
=
10 9
5
2 4
+
9 3
=
42 12
2
+
9
=
7 2
6
9 3
+
6 4
=
54 12
9
+
6
=
9 2
7
6 4
+
2 9
=
62 36
6
+
2
=
31 18
8
2 9
+
4 7
=
50 63
9
4 7
+
2 5
=
34 35
10
2 5
+
5 9
=
43 45
11
5 9
+
1 7
=
44 63
12
1 7
+
5 3
=
38 21
13
3 5
+
1 6
=
23 30
14
6 7
+
1 9
=
61 63
15
1 9
+
9 5
=
86 45