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분수: 분모가 다른 덧셈1분수7

1
1 7
+
9 9
=
72 63
1
+
9
=
8 7
2
9 9
+
2 4
=
54 36
9
+
2
=
3 2
3
7 4
+
5 6
=
31 12
4
5 6
+
6 5
=
61 30
5
6 5
+
9 9
=
99 45
6
+
9
=
11 5
6
9 9
+
5 7
=
108 63
9
+
5
=
12 7
7
5 7
+
6 4
=
62 28
5
+
6
=
31 14
8
6 4
+
1 8
=
13 8
9
8 5
+
1 3
=
29 15
10
1 3
+
4 8
=
20 24
1
+
4
=
5 6
11
4 8
+
3 4
=
10 8
4
+
3
=
5 4
12
3 4
+
1 9
=
31 36
13
1 9
+
5 6
=
17 18
14
5 6
+
2 7
=
47 42
15
2 7
+
7 3
=
55 21