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분수: 분모가 다른 덧셈4분수7

1
4 5
+
1 6
=
29 30
2
1 6
+
5 5
=
35 30
1
+
5
=
7 6
3
5 5
+
4 7
=
55 35
5
+
4
=
11 7
4
7 2
+
1 4
=
15 4
5
1 4
+
8 6
=
19 12
6
8 6
+
2 2
=
14 6
8
+
2
=
7 3
7
2 7
+
1 6
=
19 42
8
1 8
+
3 9
=
33 72
1
+
3
=
11 24
9
3 9
+
9 2
=
87 18
3
+
9
=
29 6
10
2 9
+
4 4
=
44 36
2
+
4
=
11 9
11
4 4
+
9 9
=
72 36
4
+
9
=
2
12
9 9
+
4 2
=
54 18
9
+
4
=
3
13
2 8
+
1 9
=
26 72
2
+
1
=
13 36
14
1 9
+
3 4
=
31 36
15
3 4
+
9 2
=
21 4