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Chapter 2: Problem 20

Apply the associative property to expression, and then simplify the result. \(4+(1+y)\)

Short Answer

Expert verified
The expression simplifies to \(5 + y\).

Step by step solution

01

Identify the Expression

The given expression is \(4 + (1 + y)\). Our goal is to apply the associative property, which allows us to group numbers differently in addition.
02

Apply the Associative Property

The associative property of addition states that for any numbers \(a\), \(b\), and \(c\), \((a+b)+c = a+(b+c)\). Here, we can rearrange as \((4 + 1) + y\) by regrouping the addends.
03

Simplify the Expression

Now simplify the grouped expression. Calculate \(4 + 1\), which is \(5\). The expression becomes \(5 + y\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Expression Simplification
Expression simplification is a key concept in mathematics. It helps to make complex expressions more manageable and easier to work with. In this exercise, the expression \(4 + (1 + y)\) is simplified using the associative property.
The main goal is to break down the expression into simpler components that can be evaluated easily. Let's understand a few steps involved:
  • Identify key components: Break the expression into parts. For example, \(4\), \(1\), and \(y\).
  • Apply math properties: Use properties like the associative property to regroup and reorder terms.
  • Perform calculations: After regrouping, carry out necessary calculations to simplify the expression.
By simplifying expressions, you can solve problems more efficiently, especially as equations become more complex.
Remember, practice will make these steps intuitive.
Prealgebra
Prealgebra is an essential stepping stone in mathematics. It prepares students for more advanced topics in algebra by introducing fundamental concepts, including the properties of numbers, basic operations, and expressions.
In prealgebra, students become familiar with variables like \(y\), numbers, and operations, such as addition or subtraction.Here鈥檚 why prealgebra is important:
  • Foundation for algebra: Understand the basic arithmetic that forms the basis of algebraic thinking.
  • Critical thinking: Develop the skills to solve problems through logical steps and reasoning.
  • Math properties: Learn important properties, including the associative and commutative properties of addition or multiplication.
When you understand prealgebra well, transitioning to more complex algebra topics becomes smoother. The exercise given about rearranging and simplifying expressions is a typical prealgebra task that builds these critical skills.
Addition Properties
Addition properties are a set of rules that help simplify expression manipulation and solve problems more easily. They include the commutative, associative, and identity properties.
In this particular problem, the associative property of addition is highlighted. Understanding the associative property:
  • Definition: This property states that when adding three or more numbers, the way the numbers are grouped does not change the sum. Mathematically, it's expressed as \((a + b) + c = a + (b + c)\).
  • Application: In the expression \(4 + (1 + y)\), you can change the grouping to \((4 + 1) + y\) without changing the sum.
The use of these properties facilitates working with expressions so that you can focus on solving or simplifying effectively. These properties are crucial for dealing with more advanced math problems involving sums.

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Most popular questions from this chapter

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