Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Appendix A - Review - A.6 Solving Equations - A.6 Assess Your Understanding - Page A51: 27

Answer

$\{-3\}$.

Work Step by Step

Use distributive property. $8x-2x-1=3x-10$ Simplify by combining like terms: $6x-1=3x-10$ Add $-3x+1$ to both sides. $6x-1-3x+1=3x-10-3x+1$ Simplify by combining like terms: $3x=-9$ Divide both sides by $3$. $\dfrac{3x}{3}=-\dfrac{9}{3}$ Simplify. $x=-3$ Hence, the solution to the equation is $\{-3\}$.
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