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분수: 분모가 다른 덧셈1분수7

1
1 7
+
2 2
=
16 14
1
+
2
=
8 7
2
2 2
+
1 9
=
20 18
2
+
1
=
10 9
3
1 9
+
3 8
=
35 72
4
3 8
+
4 7
=
53 56
5
7 6
+
1 4
=
17 12
6
1 4
+
7 5
=
33 20
7
7 5
+
6 6
=
72 30
7
+
6
=
12 5
8
6 6
+
5 4
=
27 12
6
+
5
=
9 4
9
5 4
+
3 5
=
37 20
10
5 3
+
3 9
=
18 9
5
+
3
=
2
11
3 9
+
9 8
=
105 72
3
+
9
=
35 24
12
8 4
+
1 7
=
60 28
8
+
1
=
15 7
13
1 5
+
6 6
=
36 30
1
+
6
=
6 5
14
6 6
+
8 2
=
30 6
6
+
8
=
5
15
8 2
+
2 3
=
28 6
8
+
2
=
14 3