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분수: 분모가 다른 덧셈6분수2

1
2 8
+
1 5
=
18 40
2
+
1
=
9 20
2
1 5
+
2 4
=
14 20
1
+
2
=
7 10
3
2 4
+
8 7
=
46 28
2
+
8
=
23 14
4
8 7
+
3 9
=
93 63
8
+
3
=
31 21
5
1 5
+
2 9
=
19 45
6
2 9
+
1 4
=
17 36
7
1 4
+
4 8
=
6 8
1
+
4
=
3 4
8
4 8
+
2 4
=
8 8
4
+
2
=
1
9
4 8
+
9 5
=
92 40
4
+
9
=
23 10
10
5 9
+
1 3
=
8 9
11
1 3
+
2 5
=
11 15
12
8 5
+
3 7
=
71 35
13
3 7
+
5 3
=
44 21
14
5 3
+
1 2
=
13 6
15
1 2
+
7 7
=
21 14
1
+
7
=
3 2