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분수 2자리 (분모가 같은)

1
4 81
+
8 81
=
12 81
4
+
8
=
4 27
2
6 78
+
5 78
=
11 78
3
3 54
+
5 54
=
8 54
3
+
5
=
4 27
4
5 47
+
7 47
=
12 47
5
7 61
+
5 61
=
12 61
6
5 39
+
1 39
=
6 39
5
+
1
=
2 13
7
1 22
+
3 22
=
4 22
1
+
3
=
2 11
8
3 58
+
1 58
=
4 58
3
+
1
=
2 29
9
1 46
+
6 46
=
7 46
10
5 63
+
1 63
=
6 63
5
+
1
=
2 21
11
1 55
+
3 55
=
4 55
12
3 26
+
1 26
=
4 26
3
+
1
=
2 13
13
1 45
+
6 45
=
7 45
14
6 67
+
4 67
=
10 67
15
4 91
+
5 91
=
9 91