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분수: 분모가 다른 덧셈3분수9

1
3 9
+
7 4
=
75 36
3
+
7
=
25 12
2
7 4
+
3 3
=
33 12
7
+
3
=
11 4
3
3 4
+
1 5
=
19 20
4
1 5
+
9 2
=
47 10
5
9 2
+
1 6
=
28 6
9
+
1
=
14 3
6
1 6
+
2 3
=
5 6
7
3 9
+
1 2
=
15 18
3
+
1
=
5 6
8
1 6
+
4 5
=
29 30
9
4 5
+
8 4
=
56 20
4
+
8
=
14 5
10
8 4
+
5 8
=
21 8
11
8 2
+
1 4
=
17 4
12
1 4
+
3 9
=
21 36
1
+
3
=
7 12
13
3 9
+
4 6
=
18 18
3
+
4
=
1
14
4 6
+
7 4
=
29 12
15
7 4
+
4 7
=
65 28