Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.2 - Linear Equations in One Variable - 1.2 Exercises - Page 87: 44

Answer

No Solution

Work Step by Step

Solve : $\frac{6 }{x} - \frac{2}{x+3} = \frac{3(x+5)}{x^{2}+3x}$ Multiply by $(x^{2}+3x)$ on both sides as $x^{2}+3x$ = x(x+3) 6(x+3) - 2(x) = 3(x+5) 6x + 18 - 2x = 3x + 15 4x - 3x = 15 - 18 x = -3 Plug x=-3 into the expression and the denominator becomes zero and since division by zero is undefined, so x=-3 is extraneous.
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