# Chapter 1 - Section 1.7 - Multiplication and Division of Real Numbers - Exercise Set - Page 84: 25

-72

#### 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. $(-4)(-3)(-1)(6)$ $(-4\times-3)(-1)(6)$ $(12\times-1)(6)$ $(-12)(6)=-72$

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