Answer
x = -1
Work Step by Step
We add 3 to both sides:
$3x = -6 + 3 = -3$
We divide both sides by 3:
$x = -3\div 3 = -1$
So x=-1
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Appendix A - A.2 - Formulas and Equations - Exercises - Page 546: 22
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