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분수: 분모가 다른 덧셈4분수7

1
4 7
+
9 4
=
79 28
2
9 4
+
6 3
=
51 12
9
+
6
=
17 4
3
3 4
+
1 8
=
7 8
4
4 8
+
7 5
=
76 40
4
+
7
=
19 10
5
7 5
+
3 4
=
43 20
6
3 4
+
5 3
=
29 12
7
3 6
+
1 4
=
9 12
3
+
1
=
3 4
8
4 4
+
1 9
=
40 36
4
+
1
=
10 9
9
1 9
+
9 4
=
85 36
10
9 4
+
1 7
=
67 28
11
1 7
+
9 4
=
67 28
12
9 4
+
7 7
=
91 28
9
+
7
=
13 4
13
7 7
+
4 6
=
70 42
7
+
4
=
5 3
14
4 6
+
2 3
=
8 6
4
+
2
=
4 3
15
2 3
+
1 4
=
11 12