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분수: 분모가 다른 덧셈4분수7

1
7 2
+
1 8
=
29 8
2
1 4
+
3 5
=
17 20
3
7 5
+
9 4
=
73 20
4
9 4
+
4 5
=
61 20
5
4 5
+
3 4
=
31 20
6
3 4
+
4 9
=
43 36
7
9 4
+
6 2
=
21 4
8
6 2
+
5 3
=
28 6
6
+
5
=
14 3
9
7 5
+
1 7
=
54 35
10
1 7
+
4 3
=
31 21
11
4 3
+
6 2
=
26 6
4
+
6
=
13 3
12
6 2
+
8 4
=
20 4
6
+
8
=
5
13
4 8
+
6 3
=
60 24
4
+
6
=
5 2
14
6 3
+
2 2
=
18 6
6
+
2
=
3
15
2 2
+
7 5
=
24 10
2
+
7
=
12 5