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분수: 분모가 다른 덧셈4분수1

1
5 3
+
1 7
=
38 21
2
1 7
+
2 6
=
20 42
1
+
2
=
10 21
3
2 6
+
8 4
=
28 12
2
+
8
=
7 3
4
8 4
+
4 2
=
16 4
8
+
4
=
4
5
2 3
+
1 9
=
7 9
6
3 9
+
6 2
=
60 18
3
+
6
=
10 3
7
6 3
+
1 4
=
27 12
6
+
1
=
9 4
8
2 4
+
7 3
=
34 12
2
+
7
=
17 6
9
7 4
+
1 2
=
9 4
10
1 2
+
6 3
=
15 6
1
+
6
=
5 2
11
6 3
+
8 9
=
26 9
12
8 9
+
1 6
=
19 18
13
3 6
+
7 3
=
17 6
14
1 5
+
3 6
=
21 30
1
+
3
=
7 10
15
3 2
+
1 3
=
11 6