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분수: 분모가 다른 덧셈3분수6

1
3 6
+
7 4
=
27 12
3
+
7
=
9 4
2
7 4
+
1 8
=
15 8
3
1 8
+
4 2
=
17 8
4
4 2
+
1 9
=
38 18
4
+
1
=
19 9
5
1 9
+
5 8
=
53 72
6
5 8
+
4 4
=
13 8
7
4 4
+
7 5
=
48 20
4
+
7
=
12 5
8
7 5
+
4 4
=
48 20
7
+
4
=
12 5
9
5 4
+
1 7
=
39 28
10
1 7
+
9 3
=
66 21
1
+
9
=
22 7
11
9 3
+
7 4
=
57 12
9
+
7
=
19 4
12
7 4
+
4 6
=
29 12
13
4 6
+
8 5
=
68 30
4
+
8
=
34 15
14
8 5
+
4 2
=
36 10
8
+
4
=
18 5
15
4 2
+
1 6
=
13 6