5777
1
=
57
7
−
7
2
=
77
−
75
3
=
7
−
(
5
−
7
7
)
4
=
77
7
+
5
5
=
(
7
−
7
)
⋅
7
+
5
6
=
77
7
−
5
7
=
(
7
−
7
)
⋅
5
+
7
8
=
57
−
7
⋅
7
9
=
5
−
7
7
+
7
10
=
(
7
+
7
)
⋅
5
7
11
=
5
−
7
7
+
7
12
=
7
−
(
7
−
5
)
+
7
13
=
7
7
+
5
+
7
14
=
77
−
7
5
15
=
57
+
7
+
7
16
=
77
7
+
5
17
=
(
5
−
7
7
)
!
−
7
18
=
7
7
+
5
!
+
7
19
=
7
⋅
7
+
5
+
7
20
=
77
−
57
21
=
(
7
−
5
)
⋅
7
+
7
22
=
5
!
−
(
7
+
7
)
⋅
7
23
=
?
24
=
77
7
+
5
!
25
=
5
7
+
7
7
26
=
75
−
7
⋅
7
27
=
?
28
=
(
5
−
7
7
)
⋅
7
29
=
5
!
⋅
7
+
7
7
30
=
(
7
−
7
7
)
⋅
5
31
=
(
5
−
7
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+
7
32
=
(
7
+
7
7
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5
33
=
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34
=
5
⋅
7
−
7
7
35
=
(
7
−
(
7
−
5
)
)
⋅
7
36
=
5
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−
77
−
7
37
=
7
⋅
7
−
5
−
7
38
=
?
39
=
?
40
=
(
7
7
+
7
)
⋅
5
41
=
7
5
−
7
!
7
42
=
77
−
5
⋅
7
43
=
57
−
7
−
7
44
=
7
⋅
7
⋅
7
−
5
45
=
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46
=
?
47
=
7
⋅
7
+
5
−
7
48
=
7
!
7
+
7
!
5
!
49
=
5
⋅
7
+
7
+
7
50
=
57
−
7
⋅
7
51
=
7
⋅
7
−
5
+
7
52
=
?
53
=
5
⋅
7
!
7
−
7
54
=
7
⋅
7
⋅
7
+
5
55
=
77
⋅
5
7
56
=
57
−
7
7
57
=
57
−
7
+
7
58
=
7
7
+
57
59
=
?
60
=
7
!
(
5
+
7
)
⋅
7
61
=
75
−
7
−
7
62
=
?
63
=
(
7
−
5
+
7
)
⋅
7
64
=
7
⋅
7
+
57
65
=
77
−
5
−
7
66
=
7
7
+
7
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−
5
67
=
5
⋅
7
!
7
+
7
68
=
75
−
7
⋅
7
69
=
?
70
=
7
!
77
−
5
71
=
57
+
7
+
7
72
=
7
!
(
7
+
7
)
⋅
5
73
=
?
74
=
75
−
7
7
75
=
75
−
7
+
7
76
=
7
7
+
75
77
=
77
7
−
5
78
=
5
!
−
7
⋅
7
+
7
79
=
77
−
5
+
7
80
=
?
81
=
?
82
=
7
⋅
7
+
75
83
=
?
84
=
5
⋅
7
+
7
⋅
7
85
=
?
86
=
?
87
=
?
88
=
?
89
=
75
+
7
+
7
90
=
?
91
=
(
5
+
7
)
⋅
7
+
7
92
=
?
93
=
(
7
+
7
)
⋅
7
−
5
94
=
?
95
=
?
96
=
?
97
=
?
98
=
(
7
−
5
)
⋅
7
⋅
7
99
=
5
!
−
7
−
7
−
7
100
=
?