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분수: 분모가 다른 덧셈1분수2

1
7 2
+
4 7
=
57 14
2
7 4
+
5 7
=
69 28
3
5 7
+
7 6
=
79 42
4
7 6
+
3 9
=
27 18
7
+
3
=
3 2
5
3 9
+
2 4
=
30 36
3
+
2
=
5 6
6
4 6
+
1 9
=
14 18
4
+
1
=
7 9
7
9 4
+
1 9
=
85 36
8
1 5
+
8 8
=
48 40
1
+
8
=
6 5
9
8 3
+
1 7
=
59 21
10
1 7
+
3 8
=
29 56
11
3 8
+
5 4
=
13 8
12
5 4
+
7 9
=
73 36
13
4 9
+
6 2
=
62 18
4
+
6
=
31 9
14
6 2
+
4 8
=
28 8
6
+
4
=
7 2
15
4 8
+
1 7
=
36 56
4
+
1
=
9 14