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분수: 분모가 다른 덧셈2분수7

1
2 7
+
3 5
=
31 35
2
3 5
+
1 3
=
14 15
3
1 3
+
7 5
=
26 15
4
7 5
+
8 2
=
54 10
7
+
8
=
27 5
5
8 2
+
9 3
=
42 6
8
+
9
=
7
6
9 3
+
6 2
=
36 6
9
+
6
=
6
7
6 2
+
3 5
=
36 10
6
+
3
=
18 5
8
8 5
+
1 2
=
21 10
9
1 4
+
8 3
=
35 12
10
8 3
+
3 2
=
25 6
11
3 2
+
6 3
=
21 6
3
+
6
=
7 2
12
8 2
+
7 7
=
70 14
8
+
7
=
5
13
7 7
+
6 3
=
63 21
7
+
6
=
3
14
6 3
+
1 2
=
15 6
6
+
1
=
5 2
15
3 2
+
6 9
=
39 18
3
+
6
=
13 6