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분수 2자리 (분모가 같은)

1
1 60
+
2 60
=
3 60
1
+
2
=
1 20
2
2 51
+
1 51
=
3 51
2
+
1
=
1 17
3
1 52
+
6 52
=
7 52
4
6 63
+
9 63
=
15 63
6
+
9
=
5 21
5
9 23
+
7 23
=
16 23
6
7 46
+
2 46
=
9 46
7
1 22
+
8 22
=
9 22
8
8 74
+
6 74
=
14 74
8
+
6
=
7 37
9
6 81
+
5 81
=
11 81
10
5 10
+
7 10
=
12 10
5
+
7
=
6 5
11
7 71
+
2 71
=
9 71
12
2 31
+
1 31
=
3 31
13
1 53
+
5 53
=
6 53
14
5 84
+
3 84
=
8 84
5
+
3
=
2 21
15
3 22
+
8 22
=
11 22
3
+
8
=
1 2
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