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분수: 분모 1자리 덧셈3분수7

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