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분수: 분모가 다른 덧셈6분수2

1
2 7
+
1 3
=
13 21
2
3 3
+
6 9
=
15 9
3
+
6
=
5 3
3
6 9
+
3 4
=
51 36
6
+
3
=
17 12
4
1 3
+
5 6
=
7 6
5
2 6
+
3 2
=
11 6
6
3 2
+
7 8
=
19 8
7
7 8
+
1 7
=
57 56
8
1 7
+
3 6
=
27 42
1
+
3
=
9 14
9
6 3
+
4 4
=
36 12
6
+
4
=
3
10
4 4
+
3 9
=
48 36
4
+
3
=
4 3
11
3 9
+
7 2
=
69 18
3
+
7
=
23 6
12
7 2
+
1 3
=
23 6
13
1 3
+
4 2
=
14 6
1
+
4
=
7 3
14
2 9
+
4 3
=
14 9
15
5 8
+
1 3
=
23 24