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분수: 분모가 다른 덧셈3분수4

1
3 4
+
9 7
=
57 28
2
7 8
+
1 3
=
29 24
3
1 3
+
3 5
=
14 15
4
3 5
+
4 7
=
41 35
5
4 7
+
8 3
=
68 21
6
1 3
+
4 2
=
14 6
1
+
4
=
7 3
7
3 2
+
8 4
=
14 4
3
+
8
=
7 2
8
8 4
+
2 3
=
32 12
8
+
2
=
8 3
9
2 3
+
5 7
=
29 21
10
5 7
+
4 3
=
43 21
11
4 3
+
5 6
=
13 6
12
5 6
+
2 5
=
37 30
13
1 3
+
3 4
=
13 12
14
3 4
+
6 3
=
33 12
3
+
6
=
11 4
15
6 5
+
1 6
=
41 30