Answer
$$ x\lt -12 .$$
Work Step by Step
By adding $-13$ to both sides of the inequality $x+13\lt 1$, we have $$ x+13\lt 1\Longrightarrow x\lt -12 .$$ See the figure below.
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Appendix C - Simple Inequalities - Exercise - Page 582: 30
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