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분수 2자리 (분모가 같은)

1
6 13
+
3 13
=
9 13
2
4 43
+
2 43
=
6 43
3
2 19
+
3 19
=
5 19
4
3 36
+
5 36
=
8 36
3
+
5
=
2 9
5
5 28
+
2 28
=
7 28
5
+
2
=
1 4
6
2 84
+
3 84
=
5 84
7
3 89
+
2 89
=
5 89
8
2 50
+
3 50
=
5 50
2
+
3
=
1 10
9
3 48
+
2 48
=
5 48
10
4 42
+
8 42
=
12 42
4
+
8
=
2 7
11
8 22
+
2 22
=
10 22
8
+
2
=
5 11
12
2 32
+
7 32
=
9 32
13
7 80
+
2 80
=
9 80
14
7 28
+
8 28
=
15 28
15
8 45
+
7 45
=
15 45
8
+
7
=
1 3