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분수: 분모가 다른 덧셈2분수8

1
2 8
+
7 5
=
66 40
2
+
7
=
33 20
2
7 5
+
1 6
=
47 30
3
1 6
+
8 7
=
55 42
4
8 7
+
4 9
=
100 63
5
4 9
+
2 2
=
26 18
4
+
2
=
13 9
6
2 2
+
4 5
=
18 10
2
+
4
=
9 5
7
4 5
+
3 3
=
27 15
4
+
3
=
9 5
8
3 3
+
2 4
=
18 12
3
+
2
=
3 2
9
2 4
+
3 2
=
8 4
2
+
3
=
2
10
3 2
+
1 8
=
13 8
11
1 8
+
3 7
=
31 56
12
7 7
+
9 6
=
105 42
7
+
9
=
5 2
13
9 6
+
5 4
=
33 12
9
+
5
=
11 4
14
5 4
+
7 3
=
43 12
15
2 3
+
1 5
=
13 15