Answer
$3$
Work Step by Step
When solving
$4x-3y=15$
$3x-2y=10$
by the addition method, we can eliminate $y$ by multiplying the first equation by $2$ and the second equation by $3$, and then adding the equations.
This is mentioned on page 520.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 5 - Systems of Equations and Inequalities - Concept and Vocabulary Check - Page 526: 5
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