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분수 2자리 (분모가 같은)

1
4 72
+
2 72
=
6 72
4
+
2
=
1 12
2
2 34
+
8 34
=
10 34
2
+
8
=
5 17
3
8 81
+
2 81
=
10 81
4
2 93
+
7 93
=
9 93
2
+
7
=
3 31
5
7 92
+
1 92
=
8 92
7
+
1
=
2 23
6
1 30
+
5 30
=
6 30
1
+
5
=
1 5
7
5 12
+
4 12
=
9 12
5
+
4
=
3 4
8
4 24
+
1 24
=
5 24
9
1 56
+
3 56
=
4 56
1
+
3
=
1 14
10
3 87
+
5 87
=
8 87
11
5 19
+
2 19
=
7 19
12
2 21
+
3 21
=
5 21
13
3 36
+
2 36
=
5 36
14
2 20
+
3 20
=
5 20
2
+
3
=
1 4
15
3 56
+
8 56
=
11 56