Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 6 - Cumulative Review - Page 407: 22

Answer

$(3,4)$

Work Step by Step

$-2x+3y=6$ Equation $(1)$ $3x-y=5 $ Equation $(2)$ From Equation $(2)$ $3x-y=5$ $3x-5 = y$ Equation $(3)$ Substituting $y$ in Equation $(1)$ $-2x+3(3x-5)= 6$ $-2x+9x-15 = 6$ $7x = 6 +15$ $7x = 21$ $x=3$ Substituting $x$ value in Equation $(3)$ $y = 3x-5$ $y =3(3)-5$ $y = 4$ Solution: $(3,4)$
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