#### Answer

30

#### Work Step by Step

Multiply two numbers at a time from left to right. Two numbers with opposite signs have a negative product while two numbers with the same sign have a positive product.
$-3(-2)(-5)(-1)$
$6(-5)(-1)$
$-30(-1)=30$

Published by
Pearson

ISBN 10:
0-13417-805-X

ISBN 13:
978-0-13417-805-9

30

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