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분수: 분모 1자리 덧셈3분수1

1
1 4
+
3 4
=
4 4
1
+
3
=
1 1
2
3 9
+
1 9
=
4 9
3
1 3
+
6 3
=
7 3
4
6 6
+
3 6
=
9 6
6
+
3
=
3 2
5
3 2
+
1 2
=
4 2
3
+
1
=
2 1
6
1 5
+
4 5
=
5 5
1
+
4
=
1 1
7
4 6
+
7 6
=
11 6
8
7 3
+
2 3
=
9 3
7
+
2
=
3 1
9
2 2
+
3 2
=
5 2
10
3 9
+
6 9
=
9 9
3
+
6
=
1 1
11
6 6
+
1 6
=
7 6
12
1 9
+
6 9
=
7 9
13
6 2
+
4 2
=
10 2
6
+
4
=
5 1
14
4 3
+
5 3
=
9 3
4
+
5
=
3 1
15
5 8
+
6 8
=
11 8