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분수: 분모가 다른 덧셈6분수0

1
1 4
+
3 9
=
21 36
1
+
3
=
7 12
2
3 9
+
7 6
=
27 18
3
+
7
=
3 2
3
7 6
+
3 7
=
67 42
4
3 7
+
8 4
=
68 28
3
+
8
=
17 7
5
8 4
+
5 5
=
60 20
8
+
5
=
3
6
5 5
+
1 4
=
25 20
5
+
1
=
5 4
7
1 4
+
7 2
=
15 4
8
7 2
+
2 3
=
25 6
9
2 3
+
5 5
=
25 15
2
+
5
=
5 3
10
5 5
+
3 8
=
55 40
5
+
3
=
11 8
11
3 8
+
4 7
=
53 56
12
4 7
+
3 9
=
57 63
4
+
3
=
19 21
13
9 4
+
1 8
=
19 8
14
1 8
+
6 4
=
13 8
15
4 6
+
1 5
=
26 30
4
+
1
=
13 15