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분수: 분모가 다른 덧셈3분수1

1
1 9
+
2 7
=
25 63
2
2 7
+
1 3
=
13 21
3
3 8
+
1 4
=
5 8
4
1 4
+
4 7
=
23 28
5
4 7
+
9 5
=
83 35
6
1 9
+
4 3
=
13 9
7
4 3
+
1 6
=
9 6
4
+
1
=
3 2
8
1 6
+
3 3
=
7 6
9
3 3
+
2 9
=
11 9
10
9 3
+
1 6
=
19 6
11
1 9
+
8 4
=
76 36
1
+
8
=
19 9
12
8 4
+
7 8
=
23 8
13
2 8
+
8 4
=
18 8
2
+
8
=
9 4
14
3 4
+
1 6
=
11 12
15
1 6
+
2 2
=
7 6