1689
1
=
9
−
(
16
−
8
)
2
=
6
−
18
9
3
=
9
18
6
4
=
6
−
18
9
5
=
91
−
86
6
=
196
−
8
7
=
68
−
19
8
=
18
9
+
6
9
=
9
16
8
10
=
6
!
81
−
9
11
=
16
8
+
9
12
=
81
−
69
13
=
96
8
+
1
14
=
98
1
+
6
15
=
96
−
81
16
=
(
9
−
8
)
⋅
16
17
=
16
−
8
+
9
18
=
16
8
⋅
9
19
=
19
8
−
6
20
=
16
⋅
9
+
8
21
=
169
+
8
22
=
196
+
8
23
=
91
−
68
24
=
(
16
−
8
)
⋅
9
25
=
81
−
6
9
26
=
16
⋅
9
+
8
27
=
18
6
⋅
9
28
=
89
−
61
29
=
6
⋅
8
−
19
30
=
16
+
8
+
9
!
31
=
186
9
!
32
=
96
81
33
=
198
6
34
=
68
9
−
1
35
=
16
⋅
8
+
9
36
=
6
18
9
37
=
98
−
61
38
=
(
8
−
6
)
⋅
19
39
=
961
+
8
40
=
(
9
−
16
)
⋅
8
41
=
16
⋅
8
+
9
42
=
(
8
−
1
9
)
⋅
6
43
=
91
−
6
⋅
8
44
=
61
−
8
−
9
45
=
81
⋅
6
−
9
46
=
1
⋅
6
⋅
9
−
8
47
=
(
1
+
6
)
⋅
8
−
9
48
=
18
⋅
9
−
6
49
=
68
−
19
50
=
61
−
8
−
9
51
=
69
−
18
52
=
(
1
+
9
)
⋅
6
−
8
53
=
(
6
−
1
)
⋅
9
+
8
54
=
(
18
−
9
)
⋅
6
55
=
(
1
+
6
)
⋅
9
−
8
56
=
168
9
57
=
1
⋅
6
⋅
8
+
9
58
=
68
−
1
−
9
59
=
68
⋅
1
−
9
60
=
69
−
81
61
=
(
9
−
8
)
⋅
61
62
=
186
9
63
=
81
⋅
6
+
9
64
=
(
18
9
)
6
65
=
89
−
16
!
66
=
(
19
−
8
)
⋅
6
67
=
86
−
19
68
=
1
9
⋅
68
69
=
1
9
+
68
70
=
1
8
+
69
71
=
6
!
8
−
19
72
=
(
16
−
8
)
⋅
9
73
=
89
−
16
74
=
98
−
16
!
75
=
81
⋅
9
−
6
76
=
68
−
1
+
9
77
=
68
⋅
1
+
9
78
=
96
−
18
79
=
81
−
6
9
80
=
(
8
−
9
)
⋅
16
81
=
9
16
8
82
=
98
−
16
83
=
89
⋅
1
−
6
84
=
81
−
6
+
9
85
=
89
−
16
86
=
1
9
⋅
86
87
=
18
+
69
88
=
8
⋅
9
+
16
89
=
1
6
⋅
89
90
=
1
6
+
89
91
=
98
−
1
−
6
92
=
98
⋅
1
−
6
93
=
16
+
89
94
=
98
−
16
95
=
86
⋅
1
+
9
96
=
81
+
6
+
9
97
=
1
8
+
96
98
=
1
6
⋅
98
99
=
819
−
6
!
100
=
16
+
98