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분수: 분모가 다른 덧셈4분수7

1
4 7
+
3 5
=
41 35
2
6 5
+
5 4
=
49 20
3
5 4
+
4 5
=
41 20
4
5 9
+
1 4
=
29 36
5
1 4
+
6 9
=
33 36
1
+
6
=
11 12
6
9 5
+
1 8
=
77 40
7
1 8
+
3 7
=
31 56
8
3 7
+
9 9
=
90 63
3
+
9
=
10 7
9
9 9
+
4 2
=
54 18
9
+
4
=
3
10
2 4
+
8 3
=
38 12
2
+
8
=
19 6
11
8 3
+
2 5
=
46 15
12
2 5
+
4 4
=
28 20
2
+
4
=
7 5
13
2 5
+
1 4
=
13 20
14
2 4
+
6 7
=
38 28
2
+
6
=
19 14
15
6 7
+
2 9
=
68 63