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분수: 분모가 다른 덧셈4분수0

1
4 5
+
2 7
=
38 35
2
7 9
+
1 4
=
37 36
3
1 2
+
2 8
=
6 8
1
+
2
=
3 4
4
2 8
+
8 7
=
78 56
2
+
8
=
39 28
5
8 7
+
1 3
=
31 21
6
6 3
+
9 8
=
75 24
6
+
9
=
25 8
7
9 8
+
4 7
=
95 56
8
4 7
+
5 4
=
51 28
9
5 4
+
8 2
=
21 4
10
8 2
+
1 6
=
25 6
11
1 6
+
5 8
=
19 24
12
5 8
+
3 5
=
49 40
13
3 5
+
7 4
=
47 20
14
7 4
+
4 6
=
29 12
15
1 5
+
3 4
=
19 20