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분수: 분모가 다른 덧셈2분수0

1
2 7
+
5 5
=
45 35
2
+
5
=
9 7
2
1 5
+
4 4
=
24 20
1
+
4
=
6 5
3
4 4
+
2 3
=
20 12
4
+
2
=
5 3
4
3 2
+
6 3
=
21 6
3
+
6
=
7 2
5
3 2
+
1 9
=
29 18
6
1 5
+
7 3
=
38 15
7
6 3
+
2 6
=
14 6
6
+
2
=
7 3
8
2 6
+
1 5
=
16 30
2
+
1
=
8 15
9
1 3
+
8 8
=
32 24
1
+
8
=
4 3
10
8 8
+
3 5
=
64 40
8
+
3
=
8 5
11
3 5
+
4 2
=
26 10
3
+
4
=
13 5
12
4 2
+
3 8
=
19 8
13
3 8
+
5 7
=
61 56
14
5 7
+
7 2
=
59 14
15
7 2
+
4 5
=
43 10