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Chapter 1: Q. 92 (page 38)

In the following exercise, simplify each expressions.

-4-5-7-8

Short Answer

Expert verified

The simplified value is 2.

Step by step solution

01

Step 1. Concept Used.

According to subtraction property, the subtraction of a number is equal to the addition of its opposite. This can be expressed as follows.

a-b=a+-b

02

Step 2. Simplification inside parentheses.

Add the opposite of 5 with 4 inside the first parentheses and opposite of 8 with 7 in the second parentheses.

-4-5-7-8=--1--1

03

Step 3. Calculation.

Add the opposite of the opposite of 1 with the opposite of the opposite of 1.

--1--1=1+1=2

04

Step 4. Conclusion.

The simplified value of the given expression is 2.

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