Answer
$x=-4$
Work Step by Step
Subtracting $4$ from both sides we have
$$
3x + 4 = - 8 \Longrightarrow 3x + 4-4 = - 8 -4 \Longrightarrow 3x=-12
$$
Dividing both sides by $3$ gives
$$ x=-4$$
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: 10
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