Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.1 - Addition and Subtraction of Polynomials - Problem Set 5.1 - Page 195: 21



Work Step by Step

We write an expression to express this addition problem: $(5x-2)+(3x-7)+(9x-10)$ We use the commutative and associative properties of addition to group like terms: $(5x+3x+9x)+(-2+(-7)+(-10))$ We combine the like terms: $17x+(-19)=17x-19$
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