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분수: 분모가 다른 덧셈2분수7

1
2 7
+
4 5
=
38 35
2
4 5
+
7 2
=
43 10
3
7 2
+
3 4
=
17 4
4
1 4
+
8 2
=
17 4
5
8 2
+
3 7
=
62 14
8
+
3
=
31 7
6
7 2
+
1 3
=
23 6
7
1 3
+
3 2
=
11 6
8
3 2
+
2 9
=
31 18
9
2 9
+
3 6
=
13 18
10
6 3
+
9 6
=
21 6
6
+
9
=
7 2
11
9 6
+
4 3
=
17 6
12
5 3
+
3 6
=
13 6
13
3 6
+
5 3
=
13 6
14
6 7
+
1 2
=
19 14
15
4 2
+
9 8
=
25 8