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분수: 분모가 다른 덧셈8분수2

1
1 3
+
3 4
=
13 12
2
3 4
+
2 5
=
23 20
3
2 2
+
4 4
=
8 4
2
+
4
=
2
4
4 4
+
8 2
=
20 4
4
+
8
=
5
5
8 2
+
1 6
=
25 6
6
1 6
+
3 5
=
23 30
7
3 5
+
5 4
=
37 20
8
1 5
+
2 4
=
14 20
1
+
2
=
7 10
9
2 4
+
4 3
=
22 12
2
+
4
=
11 6
10
4 3
+
3 7
=
37 21
11
1 4
+
7 6
=
17 12
12
7 6
+
2 2
=
13 6
13
8 2
+
4 4
=
20 4
8
+
4
=
5
14
4 4
+
2 5
=
28 20
4
+
2
=
7 5
15
1 5
+
7 4
=
39 20