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분수: 분모가 다른 덧셈4분수6

1
4 6
+
9 9
=
30 18
4
+
9
=
5 3
2
9 9
+
2 3
=
15 9
9
+
2
=
5 3
3
3 6
+
1 5
=
21 30
3
+
1
=
7 10
4
1 5
+
5 6
=
31 30
5
5 6
+
3 7
=
53 42
6
3 7
+
1 3
=
16 21
7
1 3
+
7 4
=
25 12
8
7 4
+
5 8
=
19 8
9
5 8
+
3 2
=
17 8
10
3 2
+
2 3
=
13 6
11
2 3
+
8 5
=
34 15
12
3 2
+
1 4
=
7 4
13
1 4
+
5 5
=
25 20
1
+
5
=
5 4
14
1 2
+
4 4
=
6 4
1
+
4
=
3 2
15
4 4
+
1 2
=
6 4
4
+
1
=
3 2