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분수: 분모가 다른 덧셈7분수9

1
7 9
+
2 8
=
74 72
7
+
2
=
37 36
2
2 8
+
7 5
=
66 40
2
+
7
=
33 20
3
7 5
+
4 8
=
76 40
7
+
4
=
19 10
4
4 8
+
5 2
=
24 8
4
+
5
=
3
5
5 2
+
3 5
=
31 10
6
3 5
+
2 2
=
16 10
3
+
2
=
8 5
7
2 2
+
9 7
=
32 14
2
+
9
=
16 7
8
9 7
+
2 3
=
41 21
9
2 3
+
9 5
=
37 15
10
1 3
+
8 7
=
31 21
11
3 7
+
7 3
=
58 21
12
7 3
+
4 5
=
47 15
13
5 4
+
4 8
=
14 8
5
+
4
=
7 4
14
4 8
+
9 9
=
108 72
4
+
9
=
3 2
15
9 9
+
3 3
=
18 9
9
+
3
=
2