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분수: 분모가 다른 덧셈7분수2

1
7 2
+
3 9
=
69 18
7
+
3
=
23 6
2
3 9
+
7 3
=
24 9
3
+
7
=
8 3
3
3 7
+
7 3
=
58 21
4
7 3
+
2 7
=
55 21
5
1 9
+
5 8
=
53 72
6
5 8
+
3 4
=
11 8
7
3 4
+
1 3
=
13 12
8
8 3
+
3 4
=
41 12
9
3 4
+
8 3
=
41 12
10
8 3
+
6 8
=
82 24
8
+
6
=
41 12
11
6 8
+
9 7
=
114 56
6
+
9
=
57 28
12
9 7
+
8 3
=
83 21
13
6 3
+
3 2
=
21 6
6
+
3
=
7 2
14
3 2
+
5 3
=
19 6
15
5 3
+
6 2
=
28 6
5
+
6
=
14 3