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분수: 분모가 다른 덧셈1분수3

1
2 4
+
1 2
=
4 4
2
+
1
=
1
2
1 2
+
2 5
=
9 10
3
2 5
+
5 3
=
31 15
4
1 4
+
6 3
=
27 12
1
+
6
=
9 4
5
5 3
+
1 7
=
38 21
6
1 7
+
4 2
=
30 14
1
+
4
=
15 7
7
8 2
+
3 4
=
19 4
8
4 8
+
1 2
=
8 8
4
+
1
=
1
9
2 2
+
3 7
=
20 14
2
+
3
=
10 7
10
3 7
+
1 4
=
19 28
11
1 3
+
5 4
=
19 12
12
5 4
+
6 2
=
17 4
13
6 2
+
5 5
=
40 10
6
+
5
=
4
14
5 5
+
1 9
=
50 45
5
+
1
=
10 9
15
1 2
+
4 4
=
6 4
1
+
4
=
3 2