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분수 2자리 (분모가 같은)

1
4 12
+
3 12
=
7 12
2
3 16
+
4 16
=
7 16
3
4 84
+
5 84
=
9 84
4
+
5
=
3 28
4
5 29
+
6 29
=
11 29
5
6 25
+
2 25
=
8 25
6
2 63
+
8 63
=
10 63
7
8 21
+
1 21
=
9 21
8
+
1
=
3 7
8
1 79
+
7 79
=
8 79
9
7 32
+
1 32
=
8 32
7
+
1
=
1 4
10
1 13
+
4 13
=
5 13
11
4 31
+
3 31
=
7 31
12
3 36
+
9 36
=
12 36
3
+
9
=
1 3
13
1 89
+
2 89
=
3 89
14
2 22
+
5 22
=
7 22
15
5 53
+
1 53
=
6 53