1247
1
=
12
−
4
−
7
2
=
7
−
12
4
3
=
24
1
+
7
4
=
7
−
12
4
5
=
42
−
17
6
=
7
−
1
24
7
=
24
−
17
8
=
1
24
+
7
9
=
12
+
4
−
7
10
=
12
4
+
7
11
=
17
−
2
−
4
12
=
21
⋅
4
7
13
=
27
−
14
14
=
41
−
27
15
=
12
−
4
+
7
16
=
4
⋅
7
−
12
17
=
24
⋅
1
−
7
18
=
21
+
4
−
7
19
=
14
−
2
+
7
20
=
(
12
−
7
)
⋅
4
21
=
12
4
⋅
7
22
=
27
−
1
−
4
23
=
12
+
4
+
7
24
=
21
−
4
+
7
25
=
42
−
17
26
=
47
−
21
27
=
1
4
⋅
27
28
=
14
2
7
29
=
71
−
42
30
=
17
⋅
2
−
4
31
=
72
−
41
32
=
21
+
4
+
7
33
=
2
4
+
17
34
=
17
⋅
4
2
35
=
47
−
12
36
=
(
7
−
4
)
⋅
12
37
=
74
⋅
1
2
38
=
17
⋅
2
+
4
39
=
17
−
2
+
4
!
40
=
4
⋅
7
+
12
41
=
14
+
27
42
=
(
14
+
7
)
⋅
2
43
=
172
4
44
=
47
−
1
−
2
45
=
47
⋅
1
−
2
46
=
41
−
2
+
7
47
=
71
−
24
48
=
42
−
1
+
7
49
=
14
2
⋅
7
50
=
41
+
2
+
7
51
=
27
⋅
1
+
4
!
52
=
21
+
4
!
+
7
53
=
74
−
21
54
=
27
⋅
1
⋅
4
55
=
12
⋅
4
+
7
56
=
(
12
−
4
)
⋅
7
57
=
4
1
+
2
−
7
58
=
72
−
14
59
=
12
+
47
60
=
(
17
−
2
)
⋅
4
61
=
7
4
+
12
62
=
74
−
12
63
=
7
2
+
14
64
=
4
21
7
65
=
71
−
2
−
4
66
=
17
⋅
4
−
2
67
=
72
−
1
−
4
68
=
21
+
47
69
=
71
+
2
−
4
70
=
(
7
−
2
)
⋅
14
71
=
72
−
1
4
72
=
1
4
⋅
72
73
=
71
−
2
+
4
74
=
(
2
−
1
)
⋅
74
75
=
41
⋅
2
−
7
76
=
(
12
+
7
)
⋅
4
77
=
21
⋅
4
−
7
78
=
(
4
−
1
)
!
+
72
79
=
2
⋅
4
+
71
80
=
12
⋅
7
−
4
81
=
(
21
7
)
4
82
=
12
⋅
7
−
4
83
=
4
!
2
+
71
84
=
(
14
−
2
)
⋅
7
85
=
4
!
2
⋅
7
+
1
86
=
12
+
74
87
=
174
2
88
=
12
⋅
7
+
4
89
=
41
⋅
2
+
7
90
=
7
2
+
41
91
=
21
⋅
4
+
7
92
=
(
47
−
1
)
⋅
2
93
=
47
⋅
2
−
1
94
=
47
⋅
1
⋅
2
95
=
21
+
74
96
=
14
⋅
7
−
2
97
=
71
+
2
+
4
!
98
=
(
12
+
4
)
⋅
7
99
=
(
7
−
4
)
!
−
21
100
=
14
⋅
7
+
2