Introductory Algebra for College Students (7th Edition)

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

Chapter 9 - Cumulative Review Exercises - Page 685: 2

Answer

$$x = 10$$

Work Step by Step

The first step to solving this equation is to get rid of the fractions. To do this, you multiply by the least common denominator for all terms, which, in this case, is $10$: $$10(\frac{x}{2}) - 10(3) = 10(\frac{x}{5})$$ Divide out common factors: $$5x - 10(3) = 2x$$ Subtract $2x$ from both sides of the equation to isolate the variable to one side: $$3x - 10(3) = 0$$ Simplify the constant term: $$3x - 30 = 0$$ Add $30$ to both sides of the equation to isolate the constant on one side: $$3x = 30$$ Divide both sides by $3$ to solve for $x$: $$x = 10$$
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