4457
1
=
57
4
−
4
2
=
47
−
45
3
=
44
−
5
⋅
7
4
=
7
4
−
45
5
=
45
4
+
7
6
=
54
4
+
7
7
=
54
−
47
8
=
54
+
4
7
9
=
44
−
5
⋅
7
10
=
74
−
4
!
5
11
=
5
−
4
4
+
7
12
=
4
−
4
+
5
+
7
13
=
57
−
44
14
=
74
−
4
5
15
=
45
7
−
4
16
=
(
4
+
5
−
7
)
4
17
=
45
−
4
⋅
7
18
=
54
7
−
4
19
=
45
−
7
4
20
=
74
−
54
21
=
47
−
5
4
22
=
44
7
−
5
23
=
54
−
4
!
−
7
24
=
574
+
4
25
=
(
4
+
5
)
⋅
4
+
7
26
=
54
−
4
⋅
7
27
=
47
−
4
⋅
5
28
=
45
−
4
!
+
7
29
=
74
−
45
30
=
(
7
−
4
4
)
⋅
5
31
=
75
−
44
32
=
44
−
5
−
7
33
=
(
4
+
4
)
⋅
5
−
7
34
=
45
−
4
−
7
35
=
(
4
−
4
+
5
)
⋅
7
36
=
45
−
4
−
7
37
=
47
−
4
⋅
5
38
=
47
−
4
−
5
39
=
45
−
(
7
−
4
)
!
40
=
45
+
4
−
7
41
=
57
−
4
⋅
4
42
=
44
+
5
−
7
43
=
54
−
4
−
7
44
=
44
7
−
5
45
=
54
−
4
−
7
46
=
44
−
5
+
7
47
=
(
5
−
4
)
⋅
47
48
=
45
−
4
+
7
49
=
57
−
4
−
4
50
=
45
−
4
+
7
51
=
54
+
4
−
7
52
=
(
4
⋅
5
−
7
)
⋅
4
53
=
57
−
4
⋅
4
54
=
74
−
4
⋅
5
55
=
57
−
4
+
4
56
=
44
+
5
+
7
57
=
54
−
4
+
7
58
=
4
4
+
57
59
=
75
−
4
⋅
4
60
=
(
7
−
4
)
!
+
54
61
=
4
⋅
4
+
57
62
=
45
+
4
!
−
7
63
=
54
+
4
+
7
64
=
74
−
4
⋅
5
65
=
54
+
4
+
7
66
=
47
+
4
!
−
5
67
=
4
⋅
5
+
47
68
=
47
⋅
4
−
5
!
69
=
5
!
−
44
−
7
70
=
5
!
−
(
74
−
4
!
)
71
=
54
+
4
!
−
7
72
=
5
4
+
47
73
=
4
⋅
7
+
45
74
=
(
5
−
4
)
⋅
74
75
=
74
−
4
+
5
76
=
4
4
+
75
77
=
5
!
−
(
47
−
4
)
78
=
(
5
⋅
7
+
4
)
⋅
4
79
=
5
⋅
7
+
44
80
=
(
5
−
4
)
!
+
74
81
=
74
+
4
+
5
82
=
4
⋅
7
+
54
83
=
74
+
4
+
5
84
=
(
47
−
5
)
⋅
4
85
=
54
+
4
!
+
7
86
=
(
7
−
4
)
4
+
5
87
=
4
⋅
4
⋅
5
+
7
88
=
(
7
−
5
)
⋅
44
89
=
47
⋅
4
−
5
90
=
7
!
54
+
4
91
=
4
⋅
4
+
75
92
=
45
+
47
93
=
74
+
4
!
−
5
94
=
4
⋅
5
+
74
95
=
75
−
4
+
4
!
96
=
(
4
+
4
)
⋅
(
5
+
7
)
97
=
45
⋅
4
+
7
98
=
(
4
⋅
5
+
4
)
⋅
7
99
=
47
⋅
4
+
5
100
=
(
7
−
4
)
⋅
4
⋅
5