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분수: 분모가 다른 덧셈3분수9

1
3 9
+
6 8
=
78 72
3
+
6
=
13 12
2
8 6
+
7 8
=
53 24
3
7 8
+
9 3
=
93 24
7
+
9
=
31 8
4
9 3
+
1 6
=
19 6
5
1 6
+
6 4
=
20 12
1
+
6
=
5 3
6
6 4
+
4 7
=
58 28
6
+
4
=
29 14
7
7 4
+
4 9
=
79 36
8
4 9
+
5 6
=
23 18
9
5 6
+
9 5
=
79 30
10
9 5
+
4 7
=
83 35
11
4 7
+
6 3
=
54 21
4
+
6
=
18 7
12
3 7
+
1 5
=
22 35
13
1 5
+
4 4
=
24 20
1
+
4
=
6 5
14
6 4
+
7 2
=
20 4
6
+
7
=
5
15
7 2
+
3 4
=
17 4