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분수: 분모가 다른 덧셈2분수3

1
2 3
+
4 5
=
22 15
2
1 5
+
2 7
=
17 35
3
2 7
+
1 9
=
25 63
4
1 9
+
5 2
=
47 18
5
5 2
+
3 4
=
13 4
6
3 4
+
5 2
=
13 4
7
9 5
+
4 8
=
92 40
9
+
4
=
23 10
8
4 8
+
7 6
=
40 24
4
+
7
=
5 3
9
1 3
+
3 5
=
14 15
10
5 3
+
2 5
=
31 15
11
2 5
+
9 3
=
51 15
2
+
9
=
17 5
12
3 9
+
5 3
=
18 9
3
+
5
=
2
13
5 3
+
1 4
=
23 12
14
1 4
+
3 2
=
7 4
15
4 3
+
6 2
=
26 6
4
+
6
=
13 3