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Chapter 1: Q. 1.85 (page 57)

Simplify:

a) 21-13and 21+(-13)

b)-11-7and-11+(-7)

Short Answer

Expert verified

Part(a) The required answers are 7and 7.

Part(b) The required answers are-18and-18.

Step by step solution

01

Part(a) Step 1. Given Information

Given expressions:21-13and21+(-13)

02

Part(a) Step 2. Calculation

21-13=7 21+(-13)=21-13=7

03

Part(b) Step 1. Given Information

Given expressions:-11-7and-11+(-7)

04

Part(b0 Step 2. Calculation

-11-7=-18 -11+(-7)=-11-7=-18

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