Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Section 2.7 - Solving Linear Inequalities - Exercise Set - Page 196: 85

Answer

This inequality is false for every value of $x$; therefore, the inequality has no solution, or $∅$.

Work Step by Step

To solve the inequality, we need to isolate variables on one side of the inequality and the constants on the other side. First, let's use distributive property: $$7x \leq 7(x) - 7(2)$$ Multiply: $$7x \leq 7x - 14$$ Subtract $7x$ from both sides of the inequality: $$(7x - 7x) \leq (7x - 7x) - 14$$ The $7x$ terms cancel out on both sides of the inequality: $$0 \leq -14$$ This inequality is false for every value of $x$; therefore, the inequality has no solution, or $∅$.
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