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분수: 분모가 다른 덧셈1분수3

1
1 3
+
3 5
=
14 15
2
3 5
+
6 4
=
42 20
3
+
6
=
21 10
3
4 8
+
1 4
=
6 8
4
+
1
=
3 4
4
1 4
+
7 2
=
15 4
5
7 2
+
3 6
=
24 6
7
+
3
=
4
6
3 6
+
4 2
=
15 6
3
+
4
=
5 2
7
4 2
+
2 6
=
14 6
4
+
2
=
7 3
8
2 6
+
8 4
=
28 12
2
+
8
=
7 3
9
6 4
+
3 7
=
54 28
6
+
3
=
27 14
10
3 7
+
2 6
=
32 42
3
+
2
=
16 21
11
4 6
+
2 3
=
8 6
4
+
2
=
4 3
12
2 3
+
5 2
=
19 6
13
4 2
+
1 4
=
9 4
14
9 4
+
1 7
=
67 28
15
1 7
+
6 3
=
45 21
1
+
6
=
15 7