Answer
u = 25
v = 1
Work Step by Step
Multiply the first equation by 3
3u - 90v = -15
Add to the second equation
3u - 90v = -15
-3u + 80v = 5
-10v = -10
v = 1
Plug v = 1 into 3u - 90v = -15
3u - 90 = -15
3u = 75
u = 25
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 5, Systems of Equations and Inequalities - Section 5.1 - Systems of Linear Equations in Two Variations - 5.1 Exercises - Page 447: 44
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