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분수: 분모가 다른 덧셈4분수4

1
4 4
+
2 3
=
20 12
4
+
2
=
5 3
2
2 3
+
6 4
=
26 12
2
+
6
=
13 6
3
6 4
+
9 3
=
54 12
6
+
9
=
9 2
4
9 3
+
4 4
=
48 12
9
+
4
=
4
5
4 4
+
2 7
=
36 28
4
+
2
=
9 7
6
2 7
+
3 4
=
29 28
7
4 3
+
1 7
=
31 21
8
1 7
+
9 4
=
67 28
9
9 4
+
4 3
=
43 12
10
4 3
+
2 4
=
22 12
4
+
2
=
11 6
11
2 4
+
3 7
=
26 28
2
+
3
=
13 14
12
3 7
+
5 3
=
44 21
13
5 3
+
6 6
=
16 6
5
+
6
=
8 3
14
6 6
+
3 7
=
60 42
6
+
3
=
10 7
15
3 7
+
5 4
=
47 28