#### Answer

x = any real number
identity

#### Work Step by Step

$5x+9=9(x+1)-4x$
$5x+9=9x+9-4x$
$5x+9=5x+9$

Published by
Pearson

ISBN 10:
0-32178-228-3

ISBN 13:
978-0-32178-228-1

x = any real number
identity

$5x+9=9(x+1)-4x$
$5x+9=9x+9-4x$
$5x+9=5x+9$

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