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분수: 분모가 다른 덧셈3분수1

1
1 9
+
7 4
=
67 36
2
7 4
+
3 9
=
75 36
7
+
3
=
25 12
3
3 9
+
6 5
=
69 45
3
+
6
=
23 15
4
6 5
+
8 4
=
64 20
6
+
8
=
16 5
5
8 4
+
3 8
=
19 8
6
3 8
+
5 9
=
67 72
7
5 9
+
7 3
=
26 9
8
7 3
+
1 2
=
17 6
9
9 3
+
3 7
=
72 21
9
+
3
=
24 7
10
3 7
+
4 9
=
55 63
11
4 9
+
1 5
=
29 45
12
1 5
+
8 3
=
43 15
13
8 3
+
5 2
=
31 6
14
5 2
+
7 3
=
29 6
15
7 3
+
1 8
=
59 24