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분수: 분모가 다른 덧셈4분수0

1
4 2
+
1 7
=
30 14
4
+
1
=
15 7
2
1 7
+
8 3
=
59 21
3
8 3
+
3 2
=
25 6
4
3 2
+
1 8
=
13 8
5
1 8
+
2 5
=
21 40
6
2 5
+
5 3
=
31 15
7
5 3
+
6 8
=
58 24
5
+
6
=
29 12
8
6 8
+
2 2
=
14 8
6
+
2
=
7 4
9
2 2
+
1 6
=
7 6
10
1 6
+
3 2
=
10 6
1
+
3
=
5 3
11
3 2
+
7 4
=
13 4
12
7 4
+
3 9
=
75 36
7
+
3
=
25 12
13
9 3
+
3 6
=
21 6
9
+
3
=
7 2
14
3 6
+
9 5
=
69 30
3
+
9
=
23 10
15
9 5
+
1 3
=
32 15