Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - 1.6 Other Types of Equations and Applications - 1.6 Exercises - Page 146: 19

Answer

The equation has no solution.

Work Step by Step

$\dfrac{x}{x-3}=\dfrac{3}{x-3}+3$ Multiply the whole equation by $x-3$: $(x-3)\Big(\dfrac{x}{x-3}=\dfrac{3}{x-3}+3\Big)$ $x=3+3(x-3)$ Evaluate the indicated operations: $x=3+3x-9$ Take $3x$ to the left side: $x-3x=3-9$ Simplify both sides: $-2x=-6$ Solve for $x$: $x=\dfrac{-6}{-2}$ $x=3$ The original equation is undefined for $x=3$, so the equation has no solution.
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