7999
1
=
79
9
−
9
2
=
99
−
97
3
=
9
−
(
7
−
9
9
)
4
=
99
9
−
7
5
=
7
−
9
+
9
9
6
=
99
−
7
⋅
9
7
=
(
9
−
9
)
⋅
9
+
7
8
=
9
−
7
9
−
9
9
=
(
9
−
9
)
⋅
7
+
9
10
=
7
9
−
9
+
9
11
=
9
⋅
9
−
7
+
9
12
=
7
⋅
9
9
−
9
13
=
7
−
9
9
+
9
14
=
97
+
99
15
=
7
−
9
9
+
9
16
=
97
−
9
⋅
9
17
=
9
9
+
7
+
9
18
=
99
9
+
7
19
=
97
+
9
+
9
20
=
99
−
79
21
=
(
9
−
(
9
−
7
)
)
⋅
9
22
=
7
−
9
+
9
+
9
23
=
9
⋅
9
−
7
+
9
24
=
(
99
9
−
7
)
!
25
=
79
−
9
!
⋅
9
26
=
99
9
−
7
27
=
(
9
−
7
)
⋅
9
+
9
28
=
7
+
9
+
9
+
9
29
=
9
⋅
9
−
7
+
9
30
=
(
97
+
9
)
⋅
9
31
=
7
+
9
!
+
9
+
9
32
=
(
7
+
9
)
⋅
9
!
9
33
=
(
9
−
7
+
9
)
⋅
9
34
=
7
+
9
+
9
+
9
35
=
(
9
!
−
9
9
)
⋅
7
36
=
99
−
7
⋅
9
37
=
9
⋅
9
+
7
+
9
38
=
9
!
⋅
9
−
7
−
9
39
=
7
⋅
9
+
9
+
9
40
=
99
9
+
7
41
=
7
⋅
9
!
−
9
9
42
=
(
9
+
9
)
⋅
7
9
43
=
97
−
9
!
⋅
9
44
=
9
!
⋅
9
−
7
−
9
45
=
7
⋅
9
−
9
−
9
46
=
7
9
!
9
−
9
47
=
(
9
−
9
)
⋅
9
−
7
48
=
(
7
+
9
)
⋅
9
9
49
=
7
9
+
9
9
50
=
9
!
⋅
9
−
7
+
9
51
=
7
!
+
9
99
52
=
79
−
9
⋅
9
53
=
9
!
⋅
9
−
7
+
9
!
54
=
(
7
−
9
9
)
⋅
9
55
=
(
9
−
7
)
9
!
−
9
56
=
7
!
99
−
9
57
=
99
−
7
⋅
9
!
58
=
7
9
!
9
+
9
59
=
9
!
!
9
−
7
⋅
9
60
=
9
⋅
9
−
7
⋅
9
61
=
79
−
9
−
9
62
=
7
⋅
9
−
9
9
63
=
(
9
−
(
9
−
7
)
)
⋅
9
64
=
7
⋅
9
+
9
9
65
=
9
⋅
9
−
7
−
9
66
=
7
⋅
9
+
9
9
67
=
79
−
9
−
9
68
=
9
⋅
9
−
7
−
9
!
69
=
7
⋅
9
−
9
+
9
70
=
79
−
9
⋅
9
71
=
9
⋅
9
−
7
−
9
72
=
(
9
9
+
7
)
⋅
9
73
=
79
−
9
+
9
74
=
9
⋅
9
⋅
9
−
7
75
=
99
−
(
7
−
9
)
!
76
=
79
−
9
9
77
=
99
⋅
7
9
78
=
79
−
9
9
79
=
79
−
9
+
9
80
=
9
9
+
79
81
=
7
⋅
9
+
9
+
9
82
=
9
9
+
79
83
=
99
−
7
−
9
84
=
9
9
−
7
+
9
85
=
79
−
9
+
9
86
=
99
−
7
−
9
!
87
=
9
9
−
7
+
9
!
88
=
9
⋅
9
+
79
89
=
99
−
7
−
9
90
=
9
9
−
7
+
9
91
=
79
+
9
+
9
92
=
99
−
7
!
9
!
!
93
=
(
9
+
9
)
⋅
7
+
9
94
=
97
−
9
9
95
=
99
−
7
+
9
96
=
97
−
9
9
97
=
79
+
9
+
9
98
=
9
9
+
97
99
=
99
9
−
7
100
=
9
9
+
97