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분수: 분모가 다른 덧셈3분수2

1
3 2
+
1 7
=
23 14
2
1 7
+
5 5
=
40 35
1
+
5
=
8 7
3
5 5
+
8 7
=
75 35
5
+
8
=
15 7
4
8 7
+
1 5
=
47 35
5
1 7
+
6 3
=
45 21
1
+
6
=
15 7
6
2 3
+
3 4
=
17 12
7
5 4
+
2 3
=
23 12
8
1 9
+
3 3
=
10 9
9
2 3
+
9 9
=
15 9
2
+
9
=
5 3
10
9 9
+
6 7
=
117 63
9
+
6
=
13 7
11
6 7
+
3 6
=
57 42
6
+
3
=
19 14
12
3 6
+
5 5
=
45 30
3
+
5
=
3 2
13
5 5
+
1 3
=
20 15
5
+
1
=
4 3
14
9 7
+
7 2
=
67 14
15
7 2
+
8 6
=
29 6