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분수: 분모가 다른 덧셈4분수3

1
1 7
+
2 2
=
16 14
1
+
2
=
8 7
2
9 2
+
4 5
=
53 10
3
4 5
+
3 9
=
51 45
4
+
3
=
17 15
4
3 9
+
6 3
=
21 9
3
+
6
=
7 3
5
6 3
+
5 7
=
57 21
6
+
5
=
19 7
6
5 7
+
6 3
=
57 21
5
+
6
=
19 7
7
6 3
+
5 4
=
39 12
6
+
5
=
13 4
8
5 4
+
4 7
=
51 28
9
4 7
+
3 5
=
41 35
10
3 5
+
8 2
=
46 10
3
+
8
=
23 5
11
2 4
+
1 2
=
4 4
2
+
1
=
1
12
1 2
+
4 7
=
15 14
13
7 4
+
5 3
=
41 12
14
5 3
+
1 5
=
28 15
15
1 4
+
3 8
=
5 8