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분수: 분모가 다른 덧셈1분수7

1
1 7
+
7 3
=
52 21
2
3 7
+
9 3
=
72 21
3
+
9
=
24 7
3
9 3
+
5 4
=
51 12
9
+
5
=
17 4
4
4 9
+
1 7
=
37 63
5
7 3
+
1 5
=
38 15
6
1 5
+
4 7
=
27 35
7
7 4
+
2 3
=
29 12
8
2 3
+
4 9
=
10 9
9
4 9
+
6 4
=
70 36
4
+
6
=
35 18
10
4 6
+
5 5
=
50 30
4
+
5
=
5 3
11
5 5
+
9 6
=
75 30
5
+
9
=
5 2
12
9 6
+
2 8
=
42 24
9
+
2
=
7 4
13
2 8
+
3 2
=
14 8
2
+
3
=
7 4
14
3 2
+
5 4
=
11 4
15
5 4
+
9 9
=
81 36
5
+
9
=
9 4