sat suite question viewer
Algebra
/ Linear equations in one variable
Difficulty: Easy
If , what is the value of ?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
Explanation
The correct answer is . Since the number can also be written as , the given equation can also be written as . This equation is equivalent to . Therefore, the value of is . Note that 1/5 and .2 are examples of ways to enter a correct answer.
Alternate approach: Multiplying both sides of the equation by yields . Substituting for into the expression yields , or .