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분수: 분모 1자리 덧셈2분수9

1
2 9
+
4 9
=
6 9
2
+
4
=
2 3
2
1 8
+
3 8
=
4 8
1
+
3
=
1 2
3
3 8
+
9 8
=
12 8
3
+
9
=
3 2
4
9 3
+
8 3
=
17 3
5
8 4
+
1 4
=
9 4
6
1 3
+
7 3
=
8 3
7
7 4
+
8 4
=
15 4
8
8 8
+
3 8
=
11 8
9
3 9
+
1 9
=
4 9
10
1 4
+
9 4
=
10 4
1
+
9
=
5 2
11
9 7
+
6 7
=
15 7
12
6 8
+
9 8
=
15 8
13
9 2
+
8 2
=
17 2
14
8 4
+
2 4
=
10 4
8
+
2
=
5 2
15
2 8
+
9 8
=
11 8