Beyond the Basics

83.
1. ${3}$ ${3}$
2. ${- 4, - 2}$ ${- 4, - 2}$
3. ${- 1, 2, 3, 6}$ ${- 1, 2, 3, 6}$
4. ${- 4, - 3, 0, 1}$ ${- 4, - 3, 0, 1}$
85. ${\frac{1}{3}, 3}$ ${\frac{1}{3}, 3}$
87. ${- 6, 6}$ ${- 6, 6}$
93. $| x - 4 | < 3$ $| x - 4 | < 3$
95. $| x - 4 | \leq 6$ $| x - 4 | \leq 6$
97. $| x - 7 | > 4$ $| x - 7 | > 4$
99. $| 2 x - 5 | \geq 15$ $| 2 x - 5 | \geq 15$
101. $| 2 x - a - b | < b - a$ $| 2 x - a - b | < b - a$
103. $| 2 x - a - b | > b - a$ $| 2 x - a - b | > b - a$
105. $| x - 39 | \leq 31$ $| x - 39 | \leq 31$
107. $[- 1, 1] \cup [3, 5]$ $[- 1, 1] \cup [3, 5]$
109. $(- \infty, - 1] \cup [7, \infty)$ $(- \infty, - 1] \cup [7, \infty)$
111. $(- 2, - \frac{1}{2}]$ $(- 2, - \frac{1}{2}]$

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Table of Contents for Beyond the Basics