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분수: 분모가 다른 덧셈4분수4

1
4 4
+
9 9
=
72 36
4
+
9
=
2
2
9 9
+
1 2
=
27 18
9
+
1
=
3 2
3
1 6
+
2 5
=
17 30
4
2 5
+
7 7
=
49 35
2
+
7
=
7 5
5
1 6
+
3 3
=
7 6
6
3 3
+
1 7
=
24 21
3
+
1
=
8 7
7
1 7
+
4 4
=
32 28
1
+
4
=
8 7
8
4 4
+
5 9
=
56 36
4
+
5
=
14 9
9
5 9
+
2 8
=
58 72
5
+
2
=
29 36
10
2 8
+
9 4
=
20 8
2
+
9
=
5 2
11
5 4
+
6 9
=
69 36
5
+
6
=
23 12
12
3 9
+
1 2
=
15 18
3
+
1
=
5 6
13
2 8
+
1 3
=
14 24
2
+
1
=
7 12
14
1 6
+
2 5
=
17 30
15
2 5
+
4 9
=
38 45