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분수: 분모가 다른 덧셈1분수3

1
1 3
+
6 7
=
25 21
2
6 7
+
3 8
=
69 56
3
3 8
+
2 4
=
7 8
4
2 4
+
7 8
=
11 8
5
7 8
+
1 9
=
71 72
6
1 4
+
7 3
=
31 12
7
6 3
+
5 2
=
27 6
6
+
5
=
9 2
8
5 2
+
8 9
=
61 18
9
8 9
+
3 5
=
67 45
10
3 5
+
2 4
=
22 20
3
+
2
=
11 10
11
1 4
+
9 6
=
21 12
1
+
9
=
7 4
12
9 6
+
4 3
=
17 6
13
2 3
+
5 8
=
31 24
14
5 8
+
4 2
=
21 8
15
4 2
+
7 6
=
19 6