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분수: 분모 2자리 덧셈7분수2

1
7 21
+
6 21
=
13 21
2
6 25
+
1 25
=
7 25
3
1 47
+
9 47
=
10 47
4
9 31
+
5 31
=
14 31
5
5 77
+
1 77
=
6 77
6
1 63
+
3 63
=
4 63
7
3 53
+
9 53
=
12 53
8
9 23
+
4 23
=
13 23
9
4 24
+
7 24
=
11 24
10
7 51
+
8 51
=
15 51
7
+
8
=
5 17
11
8 30
+
4 30
=
12 30
8
+
4
=
2 5
12
1 74
+
6 74
=
7 74
13
6 75
+
5 75
=
11 75
14
5 21
+
9 21
=
14 21
5
+
9
=
2 3
15
9 63
+
2 63
=
11 63