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분수: 분모 1자리 덧셈4분수2

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