Answer
x=18$^{\circ}$
Work Step by Step
Angles 2 and 7 are alternate exterior angles so they are congruent.
m$\angle$2=m$\angle$7
4x+3=5(x-3)
4x+3=5x-15
4x+18=5x
x=18
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 2 - Section 2.3 - Proving Lines Parallel - Exercises - Page 92: 24
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