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분수: 분모가 다른 덧셈2분수8

1
2 8
+
3 9
=
42 72
2
+
3
=
7 12
2
3 9
+
6 3
=
21 9
3
+
6
=
7 3
3
6 3
+
1 5
=
33 15
6
+
1
=
11 5
4
1 5
+
8 2
=
42 10
1
+
8
=
21 5
5
8 2
+
6 5
=
52 10
8
+
6
=
26 5
6
1 4
+
6 5
=
29 20
7
6 5
+
5 8
=
73 40
8
5 8
+
1 5
=
33 40
9
1 5
+
6 2
=
32 10
1
+
6
=
16 5
10
6 2
+
4 9
=
62 18
6
+
4
=
31 9
11
4 9
+
2 5
=
38 45
12
5 2
+
4 9
=
53 18
13
4 9
+
1 3
=
7 9
14
1 3
+
3 5
=
14 15
15
3 5
+
2 6
=
28 30
3
+
2
=
14 15