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분수: 분모가 다른 덧셈2분수4

1
2 4
+
4 5
=
26 20
2
+
4
=
13 10
2
4 5
+
2 7
=
38 35
3
2 7
+
8 3
=
62 21
4
3 3
+
1 4
=
15 12
3
+
1
=
5 4
5
1 4
+
4 5
=
21 20
6
4 5
+
6 7
=
58 35
7
7 6
+
3 3
=
13 6
8
3 2
+
1 3
=
11 6
9
3 3
+
1 6
=
7 6
10
4 6
+
1 7
=
34 42
4
+
1
=
17 21
11
1 7
+
2 3
=
17 21
12
3 2
+
5 6
=
14 6
3
+
5
=
7 3
13
5 6
+
3 5
=
43 30
14
3 5
+
8 7
=
61 35
15
8 7
+
2 5
=
54 35