Elementary Algebra

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

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - Chapter 1 Review Problem Set: 53

Answer

$-2a+4$

Work Step by Step

We start with the given expression: $2(a-1)-a-3(a-2)$ We use the distributive property to expand the expression: $2a-2-a-3a+6$ We use the commutative property to group like terms: $2a-a-3a+6-2$ We combine the like terms using subtraction: $-2a+4$
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