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분수: 분모가 다른 덧셈4분수0

1
4 6
+
2 9
=
16 18
4
+
2
=
8 9
2
2 9
+
1 8
=
25 72
3
1 8
+
6 2
=
25 8
4
2 6
+
4 7
=
38 42
2
+
4
=
19 21
5
4 7
+
1 2
=
15 14
6
1 2
+
3 7
=
13 14
7
3 7
+
4 6
=
46 42
3
+
4
=
23 21
8
4 6
+
8 7
=
76 42
4
+
8
=
38 21
9
8 7
+
9 5
=
103 35
10
8 8
+
1 9
=
80 72
8
+
1
=
10 9
11
1 9
+
7 4
=
67 36
12
7 4
+
2 3
=
29 12
13
2 3
+
3 7
=
23 21
14
7 3
+
2 9
=
23 9
15
2 9
+
3 5
=
37 45