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분수: 분모가 다른 덧셈9분수3

1
3 9
+
2 7
=
39 63
3
+
2
=
13 21
2
2 7
+
3 6
=
33 42
2
+
3
=
11 14
3
3 6
+
1 8
=
15 24
3
+
1
=
5 8
4
1 8
+
6 5
=
53 40
5
6 5
+
3 6
=
51 30
6
+
3
=
17 10
6
3 6
+
4 9
=
17 18
7
9 4
+
6 6
=
39 12
9
+
6
=
13 4
8
1 9
+
5 6
=
17 18
9
6 5
+
9 9
=
99 45
6
+
9
=
11 5
10
9 9
+
3 6
=
27 18
9
+
3
=
3 2
11
6 3
+
2 6
=
14 6
6
+
2
=
7 3
12
2 6
+
4 9
=
14 18
2
+
4
=
7 9
13
4 4
+
5 3
=
32 12
4
+
5
=
8 3
14
5 3
+
1 4
=
23 12
15
9 4
+
5 5
=
65 20
9
+
5
=
13 4