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분수 2자리 (분모가 같은)

1
1 15
+
5 15
=
6 15
1
+
5
=
2 5
2
5 90
+
1 90
=
6 90
5
+
1
=
1 15
3
1 60
+
2 60
=
3 60
1
+
2
=
1 20
4
2 10
+
9 10
=
11 10
5
9 15
+
4 15
=
13 15
6
6 64
+
9 64
=
15 64
7
9 21
+
1 21
=
10 21
8
1 48
+
8 48
=
9 48
1
+
8
=
3 16
9
8 51
+
1 51
=
9 51
8
+
1
=
3 17
10
1 39
+
4 39
=
5 39
11
4 41
+
5 41
=
9 41
12
5 12
+
3 12
=
8 12
5
+
3
=
2 3
13
3 88
+
1 88
=
4 88
3
+
1
=
1 22
14
1 34
+
3 34
=
4 34
1
+
3
=
2 17
15
3 59
+
4 59
=
7 59