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분수: 분모가 다른 덧셈1분수8

1
1 2
+
9 4
=
11 4
2
9 4
+
1 7
=
67 28
3
1 7
+
3 2
=
23 14
4
3 2
+
1 8
=
13 8
5
1 8
+
7 2
=
29 8
6
2 7
+
1 5
=
17 35
7
1 3
+
2 2
=
8 6
1
+
2
=
4 3
8
2 2
+
8 7
=
30 14
2
+
8
=
15 7
9
8 7
+
5 4
=
67 28
10
5 4
+
6 3
=
39 12
5
+
6
=
13 4
11
6 3
+
2 9
=
20 9
12
2 9
+
7 2
=
67 18
13
7 2
+
9 7
=
67 14
14
9 7
+
5 4
=
71 28
15
5 4
+
4 2
=
13 4