1277
1
=
72
−
71
2
=
7
−
(
12
−
7
)
3
=
17
−
2
⋅
7
4
=
7
−
21
7
5
=
17
−
7
2
6
=
7
−
1
27
7
=
21
−
7
−
7
8
=
17
−
2
−
7
9
=
72
1
+
7
10
=
27
−
17
11
=
12
−
7
7
12
=
12
−
7
+
7
13
=
7
7
+
12
14
=
17
−
2
+
7
15
=
2
−
1
+
7
+
7
16
=
71
−
7
⋅
2
17
=
1
+
2
+
7
+
7
18
=
(
7
−
1
)
⋅
2
+
7
19
=
27
−
1
−
7
20
=
(
17
−
7
)
⋅
2
21
=
21
7
⋅
7
22
=
17
−
2
+
7
23
=
(
1
+
7
)
⋅
2
+
7
24
=
17
2
+
7
25
=
7
⋅
7
+
1
2
26
=
12
+
7
+
7
27
=
17
⋅
2
−
7
28
=
7
⋅
7
−
21
29
=
(
7
−
1
)
2
−
7
30
=
(
1
+
7
+
7
)
⋅
2
31
=
217
7
32
=
7
2
−
17
33
=
27
−
1
+
7
34
=
27
⋅
1
+
7
35
=
(
12
−
7
)
⋅
7
36
=
(
7
−
1
7
)
2
37
=
7
⋅
7
−
12
38
=
77
−
1
2
39
=
71
+
7
2
40
=
(
7
−
1
)
⋅
7
−
2
41
=
17
⋅
2
+
7
42
=
(
21
7
)
!
⋅
7
43
=
(
7
−
1
)
2
+
7
44
=
17
+
27
45
=
?
46
=
7
⋅
7
−
1
−
2
47
=
1
⋅
7
⋅
7
−
2
48
=
(
17
+
7
)
⋅
2
49
=
(
7
−
2
)
!
−
71
50
=
7
⋅
7
−
1
+
2
51
=
2
+
7
⋅
17
52
=
7
⋅
7
+
1
+
2
53
=
?
54
=
(
1
+
7
)
⋅
7
−
2
55
=
72
−
17
56
=
77
−
21
57
=
71
−
2
⋅
7
58
=
(
1
+
7
)
⋅
7
+
2
59
=
?
60
=
7
!
12
⋅
7
61
=
7
⋅
7
+
12
62
=
71
−
2
−
7
63
=
(
1
⋅
2
+
7
)
⋅
7
64
=
72
−
1
−
7
65
=
77
−
12
66
=
7
2
+
17
67
=
?
68
=
71
−
2
+
7
69
=
7
!
72
−
1
70
=
7
⋅
7
+
21
71
=
72
−
1
7
72
=
1
7
⋅
72
73
=
1
7
+
72
74
=
77
−
1
−
2
75
=
77
⋅
1
−
2
76
=
71
−
2
+
7
77
=
12
⋅
7
−
7
78
=
72
−
1
+
7
79
=
72
⋅
1
+
7
80
=
71
+
2
+
7
81
=
2
+
7
1
+
7
82
=
?
83
=
(
1
+
2
)
!
+
77
84
=
7
⋅
7
⋅
12
85
=
(
7
−
2
)
⋅
17
86
=
?
87
=
?
88
=
?
89
=
12
+
77
90
=
2
+
7
!
!
1
+
7
91
=
12
⋅
7
+
7
92
=
?
93
=
?
94
=
?
95
=
?
96
=
(
7
⋅
7
−
1
)
⋅
2
97
=
2
⋅
7
⋅
7
−
1
98
=
21
+
77
99
=
2
⋅
7
⋅
7
+
1
100
=
(
17
−
7
)
2