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분수: 분모가 다른 덧셈4분수2

1
4 2
+
8 3
=
28 6
4
+
8
=
14 3
2
8 3
+
9 9
=
33 9
8
+
9
=
11 3
3
1 4
+
4 7
=
23 28
4
4 7
+
3 5
=
41 35
5
3 7
+
1 8
=
31 56
6
8 2
+
2 9
=
76 18
8
+
2
=
38 9
7
2 9
+
5 7
=
59 63
8
5 7
+
9 5
=
88 35
9
5 7
+
1 3
=
22 21
10
1 6
+
3 7
=
25 42
11
7 4
+
1 2
=
9 4
12
1 2
+
5 3
=
13 6
13
5 3
+
1 7
=
38 21
14
7 8
+
1 7
=
57 56
15
1 7
+
5 3
=
38 21