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분수: 분모가 다른 덧셈4분수4

1
4 4
+
1 5
=
24 20
4
+
1
=
6 5
2
1 5
+
5 2
=
27 10
3
5 2
+
4 9
=
53 18
4
9 3
+
1 4
=
39 12
9
+
1
=
13 4
5
4 2
+
1 5
=
22 10
4
+
1
=
11 5
6
1 5
+
7 7
=
42 35
1
+
7
=
6 5
7
7 7
+
4 6
=
70 42
7
+
4
=
5 3
8
4 6
+
8 3
=
20 6
4
+
8
=
10 3
9
8 3
+
2 7
=
62 21
10
2 7
+
4 3
=
34 21
11
4 3
+
9 2
=
35 6
12
9 2
+
8 5
=
61 10
13
8 5
+
4 8
=
84 40
8
+
4
=
21 10
14
4 8
+
9 2
=
40 8
4
+
9
=
5
15
2 9
+
7 5
=
73 45