Calculus with Applications (10th Edition)

by Lial, Margaret L.; Greenwell, Raymond N.; Ritchey, Nathan P.

Published by Pearson

ISBN 10: 0321749006

ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.4 Equations - R.4 Exercises - Page R-16: 1

Answer

- 12

Work Step by Step

The aim is,step by step, to isolate x on one side of the equation. Subtract x from both sides and the RHS will have no x's Subtract 8 from both sides and the LHS will contain only x's. $2x+8=x-4\qquad/-x-8$ $ 2x-x=-4-8\qquad$... simplify $x=-12 \qquad $(solution: $-12)$

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