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분수: 분모가 다른 덧셈3분수9

1
3 9
+
4 7
=
57 63
3
+
4
=
19 21
2
4 7
+
1 9
=
43 63
3
1 9
+
6 3
=
19 9
4
6 3
+
7 8
=
69 24
6
+
7
=
23 8
5
7 8
+
1 4
=
9 8
6
1 2
+
6 6
=
9 6
1
+
6
=
3 2
7
6 6
+
2 9
=
22 18
6
+
2
=
11 9
8
2 9
+
6 5
=
64 45
9
1 9
+
2 4
=
22 36
1
+
2
=
11 18
10
2 4
+
3 9
=
30 36
2
+
3
=
5 6
11
9 3
+
1 9
=
28 9
12
1 6
+
7 2
=
22 6
1
+
7
=
11 3
13
7 2
+
1 9
=
65 18
14
1 9
+
5 3
=
16 9
15
5 3
+
3 5
=
34 15