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분수: 분모가 다른 덧셈3분수1

1
1 2
+
5 4
=
7 4
2
1 5
+
8 3
=
43 15
3
8 3
+
7 9
=
31 9
4
7 9
+
4 4
=
64 36
7
+
4
=
16 9
5
4 3
+
1 7
=
31 21
6
1 7
+
7 3
=
52 21
7
3 7
+
2 6
=
32 42
3
+
2
=
16 21
8
6 2
+
9 4
=
21 4
9
9 4
+
8 3
=
59 12
10
8 3
+
1 6
=
17 6
11
1 6
+
9 2
=
28 6
1
+
9
=
14 3
12
2 2
+
3 3
=
12 6
2
+
3
=
2
13
3 2
+
1 5
=
17 10
14
1 5
+
7 3
=
38 15
15
3 5
+
1 3
=
14 15