## Algebra and Trigonometry 10th Edition

$|x-8|\gt5$
$|u|\lt a~↔~-a\lt u\lt a$ $|u|\leq a~↔~-a\leq u\leq a$ $|u|\gt a~↔~u\lt-a~or~u\gt a$ $|u|\geq a~↔~u\leq-a~or~u\geq a$ The numbers must be greater than 13 or less than 3: $x\lt3$ or $x\gt13$ $x-8\lt3-8$ or $x-8\gt13-8$ $x-8\lt-5$ or $x-8\gt5$ $|x-8|\gt5$