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분수: 분모가 다른 덧셈1분수3

1
1 3
+
8 4
=
28 12
1
+
8
=
7 3
2
8 4
+
9 6
=
42 12
8
+
9
=
7 2
3
9 6
+
3 5
=
63 30
9
+
3
=
21 10
4
3 5
+
4 2
=
26 10
3
+
4
=
13 5
5
8 2
+
9 8
=
41 8
6
9 8
+
1 5
=
53 40
7
5 5
+
1 7
=
40 35
5
+
1
=
8 7
8
1 7
+
9 3
=
66 21
1
+
9
=
22 7
9
9 3
+
2 5
=
51 15
9
+
2
=
17 5
10
4 5
+
3 2
=
23 10
11
2 3
+
4 5
=
22 15
12
4 5
+
3 4
=
31 20
13
3 4
+
6 3
=
33 12
3
+
6
=
11 4
14
6 3
+
4 8
=
60 24
6
+
4
=
5 2
15
4 8
+
2 5
=
36 40
4
+
2
=
9 10