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분수: 분모가 다른 덧셈4분수2

1
4 2
+
3 9
=
42 18
4
+
3
=
7 3
2
3 9
+
1 6
=
9 18
3
+
1
=
1 2
3
1 6
+
8 2
=
25 6
4
8 2
+
4 5
=
48 10
8
+
4
=
24 5
5
5 5
+
4 4
=
40 20
5
+
4
=
2
6
4 4
+
9 2
=
22 4
4
+
9
=
11 2
7
9 2
+
1 4
=
19 4
8
1 4
+
4 5
=
21 20
9
4 5
+
1 4
=
21 20
10
4 4
+
7 8
=
15 8
11
7 8
+
4 6
=
37 24
12
8 6
+
1 4
=
19 12
13
4 4
+
1 7
=
32 28
4
+
1
=
8 7
14
1 7
+
2 8
=
22 56
1
+
2
=
11 28
15
8 7
+
1 3
=
31 21