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분수: 분모가 다른 덧셈7분수2

1
7 2
+
2 5
=
39 10
2
1 2
+
9 4
=
11 4
3
9 4
+
2 7
=
71 28
4
2 7
+
1 2
=
11 14
5
1 2
+
4 9
=
17 18
6
1 2
+
2 3
=
7 6
7
4 3
+
5 5
=
35 15
4
+
5
=
7 3
8
5 5
+
1 3
=
20 15
5
+
1
=
4 3
9
5 3
+
8 4
=
44 12
5
+
8
=
11 3
10
8 4
+
5 5
=
60 20
8
+
5
=
3
11
5 5
+
6 4
=
50 20
5
+
6
=
5 2
12
6 4
+
8 2
=
22 4
6
+
8
=
11 2
13
8 2
+
9 9
=
90 18
8
+
9
=
5
14
9 9
+
1 3
=
12 9
9
+
1
=
4 3
15
1 3
+
2 7
=
13 21