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분수: 분모가 다른 덧셈2분수2

1
5 2
+
7 4
=
17 4
2
7 4
+
2 2
=
11 4
3
2 5
+
1 8
=
21 40
4
1 8
+
6 2
=
25 8
5
2 8
+
1 5
=
18 40
2
+
1
=
9 20
6
1 5
+
2 2
=
12 10
1
+
2
=
6 5
7
2 2
+
6 6
=
12 6
2
+
6
=
2
8
1 8
+
2 3
=
19 24
9
2 3
+
7 5
=
31 15
10
7 5
+
4 9
=
83 45
11
4 9
+
2 8
=
50 72
4
+
2
=
25 36
12
2 8
+
3 2
=
14 8
2
+
3
=
7 4
13
3 2
+
2 4
=
8 4
3
+
2
=
2
14
2 4
+
3 6
=
12 12
2
+
3
=
1
15
3 6
+
1 4
=
9 12
3
+
1
=
3 4