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분수: 분모가 다른 덧셈4분수7

1
4 7
+
1 3
=
19 21
2
1 3
+
2 5
=
11 15
3
1 2
+
8 4
=
10 4
1
+
8
=
5 2
4
8 4
+
3 3
=
36 12
8
+
3
=
3
5
3 3
+
9 5
=
42 15
3
+
9
=
14 5
6
9 5
+
8 4
=
76 20
9
+
8
=
19 5
7
4 6
+
1 4
=
11 12
8
1 4
+
2 3
=
11 12
9
3 8
+
1 5
=
23 40
10
1 5
+
4 9
=
29 45
11
4 9
+
1 5
=
29 45
12
9 5
+
4 7
=
83 35
13
4 7
+
1 4
=
23 28
14
1 4
+
6 2
=
13 4
15
6 2
+
4 6
=
22 6
6
+
4
=
11 3