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분수: 분모가 다른 덧셈3분수9

1
3 9
+
4 5
=
51 45
3
+
4
=
17 15
2
4 5
+
2 8
=
42 40
4
+
2
=
21 20
3
2 8
+
3 4
=
8 8
2
+
3
=
1
4
3 4
+
5 5
=
35 20
3
+
5
=
7 4
5
5 5
+
4 4
=
40 20
5
+
4
=
2
6
4 4
+
9 3
=
48 12
4
+
9
=
4
7
9 3
+
8 2
=
42 6
9
+
8
=
7
8
8 2
+
5 4
=
21 4
9
5 4
+
3 2
=
11 4
10
3 2
+
2 4
=
8 4
3
+
2
=
2
11
2 4
+
8 8
=
12 8
2
+
8
=
3 2
12
8 5
+
4 9
=
92 45
13
5 9
+
8 5
=
97 45
14
8 5
+
3 6
=
63 30
8
+
3
=
21 10
15
1 8
+
5 3
=
43 24