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분수: 분모가 다른 덧셈1분수4

1
1 4
+
4 5
=
21 20
2
3 5
+
1 9
=
32 45
3
1 9
+
4 2
=
38 18
1
+
4
=
19 9
4
4 2
+
3 3
=
18 6
4
+
3
=
3
5
3 4
+
1 5
=
19 20
6
1 5
+
2 6
=
16 30
1
+
2
=
8 15
7
2 6
+
4 3
=
10 6
2
+
4
=
5 3
8
4 3
+
7 4
=
37 12
9
7 4
+
6 2
=
19 4
10
6 2
+
4 5
=
38 10
6
+
4
=
19 5
11
4 5
+
3 2
=
23 10
12
3 2
+
5 4
=
11 4
13
5 4
+
1 3
=
19 12
14
1 3
+
9 5
=
32 15
15
9 5
+
5 6
=
79 30