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분수: 분모가 다른 덧셈5분수4

1
5 4
+
1 7
=
39 28
2
1 2
+
2 6
=
5 6
3
6 2
+
3 5
=
36 10
6
+
3
=
18 5
4
5 8
+
1 4
=
7 8
5
1 4
+
6 6
=
15 12
1
+
6
=
5 4
6
6 6
+
2 9
=
22 18
6
+
2
=
11 9
7
2 9
+
5 4
=
53 36
8
5 4
+
2 5
=
33 20
9
2 5
+
5 9
=
43 45
10
9 8
+
1 3
=
35 24
11
1 8
+
5 3
=
43 24
12
5 3
+
1 4
=
23 12
13
1 6
+
5 5
=
35 30
1
+
5
=
7 6
14
5 5
+
1 4
=
25 20
5
+
1
=
5 4
15
1 4
+
4 7
=
23 28