Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 6 - Section 6.6 - Rational Equations - Exercise Set - Page 462: 12

Answer

Solution set = $\emptyset$. (no solution)

Work Step by Step

First, we exclude those values of x that yield a zero in any of the denominators. $x\displaystyle \not\in\{4,\frac{7}{2} \}\qquad (*)$ Multiply the equation with the LCD=$(x-4)(2x-7)$ $(3x+1)(2x-7)=(6x+5)(x-4)\qquad$ ... simplify (distribute) $6x^{2}-21x+2x-7=6x^{2}-24x+5x-20$ $ 6x^{2}-19x-7=6x^{2}-19x-20\qquad$ ... add $7+6x^{2}+19x-2x$ $-19x+19x=-20+7$ $0=-13$ this is neveer true (no x exists such that this is true) Solution set = $\emptyset$. (no solution)
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