Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Cumulative Review - Page 209: 17


20 is a solution for n.

Work Step by Step

To determine if a number is a solution for an equation, substitute the number for the variable and simplify to see if the equation is true. $2(26)-30-10$ $52-30=10$ $22=10\ X$ $2(40)-30-10$ $80-30=10$ $50=10\ X$ $2(20)-30-10$ $40-30=10$ $10=10\checkmark$
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