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분수: 분모 2자리 덧셈4분수1

1
41 21
+
70 21
=
111 21
41
+
70
=
37 7
2
70 37
+
45 37
=
115 37
3
45 88
+
55 88
=
100 88
45
+
55
=
25 22
4
55 25
+
27 25
=
82 25
5
27 35
+
54 35
=
81 35
6
54 47
+
62 47
=
116 47
7
62 52
+
23 52
=
85 52
8
23 72
+
78 72
=
101 72
9
78 20
+
32 20
=
110 20
78
+
32
=
11 2
10
32 90
+
41 90
=
73 90
11
41 74
+
90 74
=
131 74
12
90 17
+
31 17
=
121 17
13
31 35
+
29 35
=
60 35
31
+
29
=
12 7
14
29 72
+
25 72
=
54 72
29
+
25
=
3 4
15
25 45
+
50 45
=
75 45
25
+
50
=
5 3