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분수 2자리 (분모가 같은)

1
4 87
+
3 87
=
7 87
2
3 72
+
4 72
=
7 72
3
4 19
+
7 19
=
11 19
4
5 77
+
4 77
=
9 77
5
6 43
+
7 43
=
13 43
6
7 49
+
3 49
=
10 49
7
3 12
+
1 12
=
4 12
3
+
1
=
1 3
8
1 71
+
4 71
=
5 71
9
4 28
+
2 28
=
6 28
4
+
2
=
3 14
10
2 53
+
6 53
=
8 53
11
6 62
+
8 62
=
14 62
6
+
8
=
7 31
12
8 75
+
7 75
=
15 75
8
+
7
=
1 5
13
7 61
+
4 61
=
11 61
14
4 48
+
3 48
=
7 48
15
3 77
+
2 77
=
5 77