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분수: 분모 1자리 덧셈3분수1

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