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분수 2자리 (분모가 같은)

1
3 12
+
7 12
=
10 12
3
+
7
=
5 6
2
7 33
+
1 33
=
8 33
3
1 15
+
3 15
=
4 15
4
3 86
+
1 86
=
4 86
3
+
1
=
2 43
5
5 11
+
7 11
=
12 11
6
7 49
+
3 49
=
10 49
7
3 28
+
4 28
=
7 28
3
+
4
=
1 4
8
4 26
+
5 26
=
9 26
9
5 39
+
2 39
=
7 39
10
2 33
+
3 33
=
5 33
11
3 72
+
2 72
=
5 72
12
2 43
+
1 43
=
3 43
13
1 21
+
6 21
=
7 21
1
+
6
=
1 3
14
6 13
+
9 13
=
15 13
15
9 25
+
3 25
=
12 25