7789
1
=
79
−
78
2
=
98
7
7
3
=
79
−
7
8
4
=
9
8
−
77
5
=
77
−
8
⋅
9
6
=
(
9
−
7
)
⋅
7
−
8
7
=
98
7
−
7
8
=
87
−
79
9
=
79
−
7
8
10
=
97
−
87
11
=
8
9
−
7
+
7
12
=
89
−
77
13
=
97
+
7
8
14
=
98
7
⋅
7
15
=
78
−
7
⋅
9
16
=
8
−
7
7
+
9
17
=
7
−
7
+
8
+
9
18
=
7
7
+
8
+
9
19
=
97
−
78
20
=
78
9
!
+
7
21
=
98
−
77
22
=
87
9
−
7
23
=
79
−
7
⋅
8
24
=
87
−
7
⋅
9
25
=
77
⋅
8
+
9
26
=
?
27
=
7
7
+
8
⋅
9
28
=
787
−
9
29
=
77
−
8
⋅
9
!
30
=
(
7
+
8
)
⋅
(
9
−
7
)
31
=
7
+
7
+
8
+
9
32
=
7
⋅
7
−
8
−
9
33
=
78
9
+
7
34
=
(
7
+
7
)
⋅
9
−
8
35
=
(
7
+
8
)
⋅
7
9
36
=
87
9
+
7
37
=
7
7
+
9
!
8
38
=
7
⋅
7
−
8
−
9
39
=
78
9
−
7
40
=
89
−
7
⋅
7
41
=
97
−
7
⋅
8
42
=
(
7
+
8
−
9
)
⋅
7
43
=
(
8
−
9
)
!
−
77
44
=
7
⋅
7
−
8
+
9
45
=
87
−
7
⋅
9
!
46
=
7
⋅
8
−
7
−
9
47
=
7
⋅
7
⋅
8
−
9
48
=
7
!
97
+
8
49
=
98
−
7
⋅
7
50
=
7
⋅
7
−
8
+
9
51
=
7
8
−
7
+
9
52
=
7
⋅
8
−
7
+
9
53
=
77
−
8
⋅
9
54
=
(
7
+
7
−
8
)
⋅
9
55
=
7
⋅
7
⋅
9
−
8
56
=
(
9
−
(
8
−
7
)
)
⋅
7
57
=
78
−
7
⋅
9
58
=
778
−
9
!
!
59
=
7
⋅
7
⋅
8
+
9
60
=
77
−
8
−
9
61
=
?
62
=
78
−
7
−
9
63
=
(
8
−
7
7
)
⋅
9
64
=
79
−
7
−
8
65
=
78
−
7
−
9
!
66
=
77
−
8
−
9
67
=
787
−
9
!
!
68
=
78
−
7
−
9
69
=
7
⋅
8
+
7
+
9
!
70
=
(
8
−
7
+
9
)
⋅
7
71
=
87
−
7
−
9
72
=
77
−
8
+
9
73
=
7
7
+
8
⋅
9
74
=
78
−
7
+
9
75
=
89
−
7
−
7
76
=
77
+
8
−
9
77
=
(
9
−
8
)
⋅
77
78
=
77
−
8
+
9
79
=
(
8
−
7
)
⋅
79
80
=
78
−
7
+
9
81
=
(
7
7
+
8
)
⋅
9
82
=
97
−
7
−
8
83
=
87
−
7
+
9
84
=
98
−
7
−
7
85
=
87
+
7
−
9
86
=
8
⋅
9
+
7
+
7
87
=
87
9
−
7
88
=
89
−
7
7
89
=
87
−
7
+
9
90
=
7
7
+
89
91
=
87
+
7
−
9
92
=
(
7
+
7
)
⋅
9
!
+
8
93
=
7
!
7
8
+
9
94
=
77
+
8
+
9
95
=
9
8
+
7
+
7
96
=
97
+
7
−
8
97
=
(
8
−
7
)
⋅
97
98
=
97
−
7
+
8
99
=
7
7
+
98
100
=
87
+
7
+
9
!