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분수: 분모가 다른 덧셈4분수4

1
4 4
+
7 3
=
40 12
4
+
7
=
10 3
2
7 3
+
3 4
=
37 12
3
3 4
+
4 2
=
11 4
4
1 7
+
5 8
=
43 56
5
5 8
+
6 5
=
73 40
6
4 6
+
1 2
=
7 6
7
2 4
+
1 9
=
22 36
2
+
1
=
11 18
8
1 9
+
4 4
=
40 36
1
+
4
=
10 9
9
4 4
+
2 5
=
28 20
4
+
2
=
7 5
10
2 5
+
7 3
=
41 15
11
3 4
+
1 9
=
31 36
12
1 9
+
9 4
=
85 36
13
4 5
+
1 4
=
21 20
14
1 4
+
3 8
=
5 8
15
3 8
+
1 6
=
13 24