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분수: 분모가 다른 덧셈4분수3

1
4 3
+
7 4
=
37 12
2
7 4
+
9 3
=
57 12
7
+
9
=
19 4
3
9 3
+
6 8
=
90 24
9
+
6
=
15 4
4
6 8
+
3 6
=
30 24
6
+
3
=
5 4
5
3 6
+
2 5
=
27 30
3
+
2
=
9 10
6
1 4
+
2 5
=
13 20
7
2 5
+
3 2
=
19 10
8
3 2
+
6 3
=
21 6
3
+
6
=
7 2
9
1 4
+
4 6
=
11 12
10
4 6
+
9 4
=
35 12
11
7 4
+
1 5
=
39 20
12
1 5
+
2 4
=
14 20
1
+
2
=
7 10
13
2 4
+
6 3
=
30 12
2
+
6
=
5 2
14
6 3
+
4 6
=
16 6
6
+
4
=
8 3
15
6 9
+
1 7
=
51 63
6
+
1
=
17 21