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분수: 분모가 다른 덧셈4분수4

1
4 7
+
1 8
=
39 56
2
1 8
+
9 4
=
19 8
3
9 4
+
2 5
=
53 20
4
5 3
+
1 9
=
16 9
5
9 4
+
1 8
=
19 8
6
1 8
+
2 2
=
9 8
7
2 2
+
5 4
=
9 4
8
5 4
+
9 3
=
51 12
5
+
9
=
17 4
9
9 3
+
1 6
=
19 6
10
6 7
+
1 3
=
25 21
11
1 3
+
3 5
=
14 15
12
5 5
+
3 2
=
25 10
5
+
3
=
5 2
13
3 2
+
2 4
=
8 4
3
+
2
=
2
14
2 4
+
7 3
=
34 12
2
+
7
=
17 6
15
7 3
+
8 5
=
59 15