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분수: 분모가 다른 덧셈7분수7

1
7 7
+
4 3
=
49 21
7
+
4
=
7 3
2
4 3
+
5 2
=
23 6
3
5 2
+
7 9
=
59 18
4
7 9
+
4 7
=
85 63
5
4 7
+
3 2
=
29 14
6
3 2
+
4 7
=
29 14
7
4 7
+
5 2
=
43 14
8
5 2
+
8 3
=
31 6
9
1 2
+
6 3
=
15 6
1
+
6
=
5 2
10
6 3
+
5 2
=
27 6
6
+
5
=
9 2
11
5 2
+
1 5
=
27 10
12
1 5
+
2 2
=
12 10
1
+
2
=
6 5
13
2 2
+
6 3
=
18 6
2
+
6
=
3
14
6 3
+
7 4
=
45 12
6
+
7
=
15 4
15
7 4
+
6 9
=
87 36
7
+
6
=
29 12