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분수: 분모가 다른 덧셈4분수1

1
1 2
+
4 7
=
15 14
2
4 7
+
2 3
=
26 21
3
3 2
+
2 8
=
14 8
3
+
2
=
7 4
4
2 8
+
4 5
=
42 40
2
+
4
=
21 20
5
4 5
+
2 4
=
26 20
4
+
2
=
13 10
6
2 4
+
1 9
=
22 36
2
+
1
=
11 18
7
1 9
+
4 3
=
13 9
8
4 3
+
6 6
=
14 6
4
+
6
=
7 3
9
6 6
+
4 4
=
24 12
6
+
4
=
2
10
4 4
+
1 5
=
24 20
4
+
1
=
6 5
11
1 5
+
8 2
=
42 10
1
+
8
=
21 5
12
8 2
+
7 6
=
31 6
13
7 6
+
2 4
=
20 12
7
+
2
=
5 3
14
2 4
+
7 2
=
16 4
2
+
7
=
4
15
7 2
+
4 5
=
43 10