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분수: 분모가 다른 덧셈3분수4

1
4 3
+
5 7
=
43 21
2
7 2
+
1 9
=
65 18
3
1 9
+
2 8
=
26 72
1
+
2
=
13 36
4
8 4
+
1 9
=
76 36
8
+
1
=
19 9
5
1 9
+
2 4
=
22 36
1
+
2
=
11 18
6
4 2
+
6 7
=
40 14
4
+
6
=
20 7
7
6 7
+
2 2
=
26 14
6
+
2
=
13 7
8
1 8
+
4 9
=
41 72
9
4 9
+
8 3
=
28 9
10
3 7
+
1 5
=
22 35
11
1 5
+
8 4
=
44 20
1
+
8
=
11 5
12
4 4
+
1 2
=
6 4
4
+
1
=
3 2
13
1 2
+
7 4
=
9 4
14
7 4
+
6 5
=
59 20
15
6 5
+
4 3
=
38 15