#### Answer

$-27$

#### Work Step by Step

$x^{5/3}=-243\Rightarrow \left( \sqrt [3] {x}\right) ^{5}=\left( -3\right) ^{5}\Rightarrow \sqrt [3] {x}=-3\Rightarrow x=\left( -3\right) ^{3}=-27$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$-27$

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