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분수: 분모 2자리 덧셈6분수2

1
6 21
+
7 21
=
13 21
2
3 87
+
9 87
=
12 87
3
+
9
=
4 29
3
9 12
+
2 12
=
11 12
4
6 42
+
5 42
=
11 42
5
5 37
+
2 37
=
7 37
6
2 49
+
4 49
=
6 49
7
4 86
+
1 86
=
5 86
8
9 21
+
5 21
=
14 21
9
+
5
=
2 3
9
5 49
+
2 49
=
7 49
5
+
2
=
1 7
10
2 45
+
6 45
=
8 45
11
6 45
+
1 45
=
7 45
12
1 23
+
8 23
=
9 23
13
5 98
+
4 98
=
9 98
14
7 24
+
2 24
=
9 24
7
+
2
=
3 8
15
2 21
+
8 21
=
10 21