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분수: 분모가 다른 덧셈4분수7

1
4 7
+
7 5
=
69 35
2
7 5
+
1 9
=
68 45
3
1 9
+
4 6
=
14 18
1
+
4
=
7 9
4
4 6
+
5 3
=
14 6
4
+
5
=
7 3
5
5 3
+
6 2
=
28 6
5
+
6
=
14 3
6
6 2
+
9 9
=
72 18
6
+
9
=
4
7
9 9
+
4 4
=
72 36
9
+
4
=
2
8
4 6
+
1 4
=
11 12
9
1 2
+
5 3
=
13 6
10
5 3
+
2 9
=
17 9
11
9 2
+
2 7
=
67 14
12
1 2
+
5 5
=
15 10
1
+
5
=
3 2
13
5 5
+
6 3
=
45 15
5
+
6
=
3
14
4 7
+
1 4
=
23 28
15
1 4
+
5 2
=
11 4