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분수: 분모 2자리 덧셈3분수1

1
3 13
+
6 13
=
9 13
2
6 12
+
3 12
=
9 12
6
+
3
=
3 4
3
3 74
+
2 74
=
5 74
4
1 42
+
3 42
=
4 42
1
+
3
=
2 21
5
3 14
+
2 14
=
5 14
6
2 35
+
5 35
=
7 35
2
+
5
=
1 5
7
5 51
+
3 51
=
8 51
8
3 13
+
9 13
=
12 13
9
9 30
+
1 30
=
10 30
9
+
1
=
1 3
10
1 20
+
3 20
=
4 20
1
+
3
=
1 5
11
2 13
+
5 13
=
7 13
12
5 93
+
4 93
=
9 93
5
+
4
=
3 31
13
4 92
+
6 92
=
10 92
4
+
6
=
5 46
14
6 17
+
7 17
=
13 17
15
7 73
+
5 73
=
12 73