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분수: 분모가 다른 덧셈3분수1

1
1 2
+
5 7
=
17 14
2
5 7
+
6 4
=
62 28
5
+
6
=
31 14
3
6 4
+
9 9
=
90 36
6
+
9
=
5 2
4
9 4
+
1 8
=
19 8
5
1 8
+
4 6
=
19 24
6
4 6
+
9 2
=
31 6
7
9 2
+
8 3
=
43 6
8
8 3
+
2 4
=
38 12
8
+
2
=
19 6
9
4 2
+
8 4
=
16 4
4
+
8
=
4
10
8 4
+
5 8
=
21 8
11
5 8
+
9 4
=
23 8
12
9 4
+
4 2
=
17 4
13
3 2
+
4 4
=
10 4
3
+
4
=
5 2
14
4 4
+
9 3
=
48 12
4
+
9
=
4
15
9 3
+
5 4
=
51 12
9
+
5
=
17 4