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분수: 분모가 다른 덧셈4분수2

1
4 2
+
2 4
=
10 4
4
+
2
=
5 2
2
2 4
+
5 5
=
30 20
2
+
5
=
3 2
3
5 5
+
7 9
=
80 45
5
+
7
=
16 9
4
7 9
+
5 3
=
22 9
5
5 3
+
1 6
=
11 6
6
1 6
+
3 3
=
7 6
7
3 3
+
7 7
=
42 21
3
+
7
=
2
8
7 7
+
6 2
=
56 14
7
+
6
=
4
9
2 2
+
1 4
=
5 4
10
1 4
+
3 3
=
15 12
1
+
3
=
5 4
11
3 3
+
1 6
=
7 6
12
1 6
+
2 9
=
7 18
13
2 9
+
6 8
=
70 72
2
+
6
=
35 36
14
6 8
+
1 9
=
62 72
6
+
1
=
31 36
15
1 9
+
4 4
=
40 36
1
+
4
=
10 9