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분수 2자리 (분모가 같은)

1
2 21
+
4 21
=
6 21
2
+
4
=
2 7
2
4 86
+
2 86
=
6 86
4
+
2
=
3 43
3
2 32
+
1 32
=
3 32
4
1 31
+
2 31
=
3 31
5
2 12
+
5 12
=
7 12
6
5 90
+
4 90
=
9 90
5
+
4
=
1 10
7
4 34
+
8 34
=
12 34
4
+
8
=
6 17
8
4 98
+
2 98
=
6 98
4
+
2
=
3 49
9
6 12
+
9 12
=
15 12
6
+
9
=
5 4
10
9 35
+
4 35
=
13 35
11
4 74
+
1 74
=
5 74
12
1 23
+
5 23
=
6 23
13
5 28
+
6 28
=
11 28
14
4 36
+
2 36
=
6 36
4
+
2
=
1 6
15
2 58
+
4 58
=
6 58
2
+
4
=
3 29