Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 10 - Section 10.2 - Systems of Linear Equations in Several Variables - 10.2 Exercises: 10

Answer

(4,3,4)

Work Step by Step

Solving the last equation by dividing by 3 we get z is 4. When we substitute z = 4 into the second equation we get $2y-4=2$ Solving we get y = 3. Substituting both variables into the first equation we get $x-6+12=10$. Solving, x is 4.
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