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분수: 분모가 다른 덧셈2분수0

1
2 7
+
7 4
=
57 28
2
4 7
+
1 3
=
19 21
3
1 3
+
9 5
=
32 15
4
9 5
+
5 2
=
43 10
5
5 2
+
2 5
=
29 10
6
2 5
+
3 4
=
23 20
7
3 4
+
1 5
=
19 20
8
1 5
+
2 6
=
16 30
1
+
2
=
8 15
9
2 6
+
1 3
=
4 6
2
+
1
=
2 3
10
1 2
+
4 3
=
11 6
11
3 3
+
1 4
=
15 12
3
+
1
=
5 4
12
1 4
+
2 5
=
13 20
13
2 5
+
3 8
=
31 40
14
8 3
+
3 4
=
41 12
15
3 4
+
5 5
=
35 20
3
+
5
=
7 4