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분수: 분모가 다른 덧셈5분수7

1
5 7
+
6 3
=
57 21
5
+
6
=
19 7
2
6 3
+
7 4
=
45 12
6
+
7
=
15 4
3
7 4
+
3 7
=
61 28
4
3 7
+
4 3
=
37 21
5
4 3
+
2 2
=
14 6
4
+
2
=
7 3
6
2 2
+
5 4
=
9 4
7
5 4
+
7 2
=
19 4
8
7 2
+
4 4
=
18 4
7
+
4
=
9 2
9
4 4
+
2 3
=
20 12
4
+
2
=
5 3
10
6 3
+
2 7
=
48 21
6
+
2
=
16 7
11
2 7
+
5 2
=
39 14
12
2 8
+
1 6
=
10 24
2
+
1
=
5 12
13
1 6
+
8 4
=
26 12
1
+
8
=
13 6
14
4 5
+
1 6
=
29 30
15
1 3
+
2 7
=
13 21