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분수: 분모가 다른 덧셈2분수4

1
6 4
+
7 2
=
20 4
6
+
7
=
5
2
7 9
+
1 5
=
44 45
3
1 5
+
7 6
=
41 30
4
7 6
+
2 8
=
34 24
7
+
2
=
17 12
5
1 8
+
4 3
=
35 24
6
4 3
+
5 8
=
47 24
7
5 8
+
1 7
=
43 56
8
1 2
+
5 9
=
19 18
9
5 9
+
9 3
=
32 9
10
2 3
+
4 2
=
16 6
2
+
4
=
8 3
11
2 5
+
1 6
=
17 30
12
1 6
+
4 2
=
13 6
13
4 2
+
1 5
=
22 10
4
+
1
=
11 5
14
1 5
+
7 7
=
42 35
1
+
7
=
6 5
15
7 7
+
6 4
=
70 28
7
+
6
=
5 2