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분수: 분모가 다른 덧셈9분수2

1
9 2
+
3 4
=
21 4
2
3 4
+
4 8
=
10 8
3
+
4
=
5 4
3
8 4
+
3 2
=
14 4
8
+
3
=
7 2
4
3 2
+
1 3
=
11 6
5
1 7
+
3 4
=
25 28
6
1 2
+
3 6
=
6 6
1
+
3
=
1
7
3 6
+
2 3
=
7 6
8
3 7
+
1 8
=
31 56
9
1 8
+
7 4
=
15 8
10
7 4
+
1 7
=
53 28
11
1 7
+
3 4
=
25 28
12
4 7
+
8 4
=
72 28
4
+
8
=
18 7
13
8 4
+
2 6
=
28 12
8
+
2
=
7 3
14
2 6
+
1 7
=
20 42
2
+
1
=
10 21
15
1 5
+
5 2
=
27 10