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Chapter 1: Q. 400 (page 91)

In the following exercises, simplify each expression.

-12+-8+7

Short Answer

Expert verified

The given expression is simplified to-13.

Step by step solution

01

Step 1. Given information

The expression is-12+-8+7

02

Step 2. Formula used

+-a=-a

03

Step 3. Simplify

-12+-8+7=-12-8+7use+(-8)=-8=-20+7=-13

Hence, the expression is simplified to-13.

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