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분수: 분모가 다른 덧셈2분수9

1
9 6
+
1 7
=
69 42
9
+
1
=
23 14
2
7 4
+
1 2
=
9 4
3
1 2
+
9 5
=
23 10
4
9 5
+
4 2
=
38 10
9
+
4
=
19 5
5
4 2
+
2 7
=
32 14
4
+
2
=
16 7
6
2 7
+
7 2
=
53 14
7
7 2
+
9 8
=
37 8
8
8 3
+
1 2
=
19 6
9
1 2
+
4 3
=
11 6
10
4 3
+
5 6
=
13 6
11
1 3
+
8 7
=
31 21
12
8 7
+
3 2
=
37 14
13
3 2
+
6 5
=
27 10
14
3 8
+
1 7
=
29 56
15
1 7
+
2 2
=
16 14
1
+
2
=
8 7