Answer
c. subtract 9 from both sides
Work Step by Step
Use the addition property of equality, which also covers subtraction, to isolate the variable term on one side of the equation.
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 3 - Section 3.3 - Solving Linear Equations in One Variable - Exercise Set - Page 190: 84
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