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분수: 분모가 다른 덧셈4분수8

1
1 2
+
2 4
=
4 4
1
+
2
=
1
2
4 4
+
1 3
=
16 12
4
+
1
=
4 3
3
1 6
+
3 5
=
23 30
4
1 6
+
4 2
=
13 6
5
2 4
+
9 2
=
20 4
2
+
9
=
5
6
9 2
+
3 6
=
30 6
9
+
3
=
5
7
6 2
+
1 7
=
44 14
6
+
1
=
22 7
8
1 6
+
7 8
=
25 24
9
7 8
+
5 4
=
17 8
10
4 3
+
1 2
=
11 6
11
1 5
+
2 2
=
12 10
1
+
2
=
6 5
12
2 2
+
1 5
=
12 10
2
+
1
=
6 5
13
1 5
+
9 4
=
49 20
14
9 4
+
2 9
=
89 36
15
2 9
+
8 5
=
82 45