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Chapter 1: Q. 194 (page 60)

In the following exercise, evaluate:-dwhen(a)d=21(b)d=-21

Short Answer

Expert verified

Part (a) The solution is -21.

Part (b) The solution is21.

Step by step solution

01

Step 1. Given information

Integer:-dwhen(a)d=21(b)d=-21

02

Part (a) Step 1. Calculation

To evaluate when d=21means to substitute 21for d.

-d=-(21)=-21

The solution is opposite of21.

03

Part (b) Step 1. Calculation

To evaluate when d=-21means to substitute -21for d.

-d=-(-21)=21

The solution is opposite of-21.

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