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분수: 분모가 다른 덧셈4분수7

1
4 4
+
1 9
=
40 36
4
+
1
=
10 9
2
1 9
+
2 3
=
7 9
3
2 3
+
5 7
=
29 21
4
7 5
+
3 3
=
36 15
7
+
3
=
12 5
5
3 3
+
5 2
=
21 6
3
+
5
=
7 2
6
5 2
+
4 6
=
19 6
7
4 6
+
1 7
=
34 42
4
+
1
=
17 21
8
1 7
+
7 2
=
51 14
9
3 6
+
1 7
=
27 42
3
+
1
=
9 14
10
1 7
+
4 5
=
33 35
11
4 5
+
9 2
=
53 10
12
9 2
+
1 7
=
65 14
13
1 8
+
9 5
=
77 40
14
1 5
+
3 2
=
17 10
15
3 2
+
4 9
=
35 18