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분수: 분모가 다른 덧셈2분수7

1
2 7
+
4 4
=
36 28
2
+
4
=
9 7
2
4 2
+
1 9
=
38 18
4
+
1
=
19 9
3
8 2
+
1 4
=
17 4
4
4 5
+
1 7
=
33 35
5
1 7
+
3 2
=
23 14
6
3 2
+
1 4
=
7 4
7
6 4
+
1 9
=
58 36
6
+
1
=
29 18
8
1 9
+
4 5
=
41 45
9
5 4
+
3 6
=
21 12
5
+
3
=
7 4
10
3 6
+
9 2
=
30 6
3
+
9
=
5
11
2 2
+
1 5
=
12 10
2
+
1
=
6 5
12
5 4
+
1 5
=
29 20
13
5 6
+
1 4
=
13 12
14
1 4
+
3 2
=
7 4
15
2 2
+
1 8
=
9 8