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분수: 분모가 다른 덧셈2분수5

1
2 5
+
3 3
=
21 15
2
+
3
=
7 5
2
2 3
+
5 9
=
11 9
3
9 3
+
4 9
=
31 9
4
4 9
+
2 2
=
26 18
4
+
2
=
13 9
5
2 2
+
3 6
=
9 6
2
+
3
=
3 2
6
3 6
+
1 7
=
27 42
3
+
1
=
9 14
7
7 7
+
1 2
=
21 14
7
+
1
=
3 2
8
1 2
+
3 3
=
9 6
1
+
3
=
3 2
9
3 3
+
6 6
=
12 6
3
+
6
=
2
10
6 6
+
4 9
=
26 18
6
+
4
=
13 9
11
4 9
+
3 2
=
35 18
12
2 3
+
1 8
=
19 24
13
1 8
+
2 7
=
23 56
14
1 4
+
5 3
=
23 12
15
2 3
+
4 4
=
20 12
2
+
4
=
5 3