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분수: 분모가 다른 덧셈2분수8

1
2 8
+
8 2
=
34 8
2
+
8
=
17 4
2
8 2
+
5 3
=
34 6
8
+
5
=
17 3
3
5 3
+
3 9
=
18 9
5
+
3
=
2
4
3 9
+
9 4
=
93 36
3
+
9
=
31 12
5
9 4
+
5 3
=
47 12
6
5 3
+
6 9
=
21 9
5
+
6
=
7 3
7
9 3
+
1 7
=
66 21
9
+
1
=
22 7
8
8 4
+
1 7
=
60 28
8
+
1
=
15 7
9
1 7
+
4 3
=
31 21
10
4 3
+
7 5
=
41 15
11
7 5
+
4 9
=
83 45
12
1 2
+
2 9
=
13 18
13
2 2
+
1 8
=
9 8
14
1 8
+
2 9
=
25 72
15
7 2
+
1 8
=
29 8