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분수: 분모가 다른 덧셈2분수8

1
2 8
+
9 4
=
20 8
2
+
9
=
5 2
2
9 4
+
2 3
=
35 12
3
3 2
+
8 9
=
43 18
4
8 9
+
2 8
=
82 72
8
+
2
=
41 36
5
2 8
+
9 3
=
78 24
2
+
9
=
13 4
6
9 3
+
1 7
=
66 21
9
+
1
=
22 7
7
1 7
+
5 3
=
38 21
8
3 8
+
1 4
=
5 8
9
1 4
+
7 2
=
15 4
10
7 2
+
2 4
=
16 4
7
+
2
=
4
11
1 4
+
7 6
=
17 12
12
7 6
+
2 2
=
13 6
13
2 2
+
7 7
=
28 14
2
+
7
=
2
14
7 7
+
4 3
=
49 21
7
+
4
=
7 3
15
4 3
+
2 5
=
26 15