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분수: 분모가 다른 덧셈2분수2

1
2 2
+
4 4
=
8 4
2
+
4
=
2
2
6 4
+
4 5
=
46 20
6
+
4
=
23 10
3
4 5
+
9 6
=
69 30
4
+
9
=
23 10
4
9 6
+
2 8
=
42 24
9
+
2
=
7 4
5
2 8
+
1 9
=
26 72
2
+
1
=
13 36
6
1 9
+
4 4
=
40 36
1
+
4
=
10 9
7
4 4
+
7 2
=
18 4
4
+
7
=
9 2
8
7 2
+
2 4
=
16 4
7
+
2
=
4
9
3 4
+
7 2
=
17 4
10
7 2
+
8 8
=
36 8
7
+
8
=
9 2
11
8 8
+
1 9
=
80 72
8
+
1
=
10 9
12
1 5
+
5 3
=
28 15
13
5 3
+
6 2
=
28 6
5
+
6
=
14 3
14
6 2
+
9 3
=
36 6
6
+
9
=
6
15
9 3
+
8 9
=
35 9