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Ch. R - Review of Basic Concepts
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063Not the one you use?Change textbook
All textbooksLial 13th EditionCh. R - Review of Basic ConceptsProblem 41
Chapter 1, Problem 41

Find each sum or difference. 8 - (-13)

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1
Identify the problem as a subtraction involving a negative number: \(8 - (-13)\).
Recall the rule that subtracting a negative number is the same as adding its positive counterpart, so rewrite the expression as \(8 + 13\).
Perform the addition of the two positive numbers: \(8 + 13\).
Calculate the sum to find the result.
Write the final answer clearly as the sum of the original expression.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Understanding Integers

Integers include positive and negative whole numbers, as well as zero. Recognizing how to work with negative numbers is essential for operations like addition and subtraction involving integers.
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Introduction to Polynomial Functions

Subtracting Negative Numbers

Subtracting a negative number is equivalent to adding its positive counterpart. For example, 8 - (-13) is the same as 8 + 13, which simplifies the calculation.
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Adding and Subtracting Complex Numbers

Basic Arithmetic Operations

Performing addition and subtraction accurately is fundamental in algebra. Understanding how to combine numbers and apply operation rules ensures correct evaluation of expressions.
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Arithmetic Sequences - Recursive Formula
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