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분수: 분모가 다른 덧셈4분수2

1
2 2
+
1 3
=
8 6
2
+
1
=
4 3
2
1 6
+
4 7
=
31 42
3
4 7
+
9 4
=
79 28
4
9 4
+
4 7
=
79 28
5
4 7
+
6 3
=
54 21
4
+
6
=
18 7
6
6 3
+
4 2
=
24 6
6
+
4
=
4
7
4 2
+
1 5
=
22 10
4
+
1
=
11 5
8
1 7
+
5 2
=
37 14
9
5 2
+
2 4
=
12 4
5
+
2
=
3
10
2 4
+
4 7
=
30 28
2
+
4
=
15 14
11
4 7
+
9 3
=
75 21
4
+
9
=
25 7
12
9 3
+
5 2
=
33 6
9
+
5
=
11 2
13
5 2
+
1 5
=
27 10
14
3 5
+
2 9
=
37 45
15
2 9
+
4 3
=
14 9