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분수: 분모 2자리 덧셈4분수2

1
42 21
+
21 21
=
63 21
42
+
21
=
3 1
2
21 83
+
51 83
=
72 83
3
51 94
+
14 94
=
65 94
4
14 28
+
22 28
=
36 28
14
+
22
=
9 7
5
22 25
+
52 25
=
74 25
6
52 62
+
20 62
=
72 62
52
+
20
=
36 31
7
20 55
+
61 55
=
81 55
8
61 72
+
41 72
=
102 72
61
+
41
=
17 12
9
41 84
+
92 84
=
133 84
41
+
92
=
19 12
10
92 65
+
26 65
=
118 65
11
26 43
+
73 43
=
99 43
12
73 66
+
20 66
=
93 66
73
+
20
=
31 22
13
20 81
+
24 81
=
44 81
14
24 93
+
17 93
=
41 93
15
17 96
+
34 96
=
51 96
17
+
34
=
17 32