Answer
$x=-1$
Work Step by Step
Combining the like terms and simplifying, we have
$$
6 - x = 2x + 9 \Longrightarrow -3 x = -6+ 9 \Longrightarrow -3x=3
$$
Dividing both sides by $-3$ gives
$$
x=-1
$$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Appendix A - Review - A.8 Solving Equations - A.8 Assess Your Understanding - Page A70: 13
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