Identifying Constants and Variable Terms

Oct 13, 2025 by windailys.com 47 views

Introduction

In algebra, combining like terms is a fundamental concept that allows us to simplify complex expressions and make them easier to work with. Like terms are terms that have the same variable(s) raised to the same power. In this article, we will explore how to combine like terms to write an equivalent expression, and then complete the statements.

Understanding Like Terms

Like terms are terms that have the same variable(s) raised to the same power. For example, in the expression $9 + j + 6j - 1 - 2k$ , the terms $j$ and $6j$ are like terms because they both have the variable $j$ raised to the power of 1. Similarly, the terms $-1$ and $9$ are like terms because they are both constants.

Identifying Constants and Variable Terms

Let's take a closer look at the given expression: $9 + j + 6j - 1 - 2k$ . We can identify the constants and variable terms as follows:

Constants: The constants in the expression are $9$ and $-1$ . These are like terms because they are both constants.
Variable Terms: The variable terms in the expression are $j$ , $6j$ , and $-2k$ . These are like terms because they all have the variable(s) raised to the same power.

Combining Like Terms

Now that we have identified the like terms, we can combine them to simplify the expression. To combine like terms, we add or subtract the coefficients of the like terms. In this case, we can combine the constants and the variable terms as follows:

Constants: $9 + (-1) = 8$
Variable Terms: $j + 6j = 7j$ and $-2k$ remains the same

The simplified expression is: $8 + 7j - 2k$

Completing the Statements

Now that we have simplified the expression, we can complete the statements as follows:

The constants, ${$ \square$}$, are like terms. This statement is true because the constants $9$ and $-1$ are like terms.
${$ \square$}$ are like variable terms. This statement is true because the variable terms $j$ , $6j$ , and $-2k$ are like terms.
Combine the ... terms to write an equivalent expression. This statement is true because we combined the like terms to write an equivalent expression: $8 + 7j - 2k$

Conclusion

In conclusion, combining like terms is an essential concept in algebra that allows us to simplify complex expressions and make them easier to work with. By identifying the like terms and combining them, we can write an equivalent expression that is easier to work with. In this article, we explored how to combine like terms to simplify the expression $9 + j + 6j - 1 - 2k$ and complete the statements.

Example Problems

Here are some example problems that you can try to practice combining like terms:

Simplify the expression: $2x + 3x - 4y + 5y$
Simplify the expression: $x^2 + 2x^2 - 3y^2 + 4y^2$
Simplify the expression: $5a + 2b - 3a - 4b$

Tips and Tricks

Here are some tips and tricks that you can use to help you combine like terms:

Make sure to identify the like terms before combining them.
Use the distributive property to simplify the expression.
Use the commutative property to rearrange the terms.
Use the associative property to group the terms.

Introduction

Combining like terms is a fundamental concept in algebra that allows us to simplify complex expressions and make them easier to work with. In this article, we will answer some frequently asked questions about combining like terms and provide examples to help you understand the concept better.

Q: What are like terms?

A: Like terms are terms that have the same variable(s) raised to the same power. For example, in the expression $9 + j + 6j - 1 - 2k$ , the terms $j$ and $6j$ are like terms because they both have the variable $j$ raised to the power of 1.

Q: How do I identify like terms?

A: To identify like terms, you need to look for terms that have the same variable(s) raised to the same power. For example, in the expression $2x + 3x - 4y + 5y$ , the terms $2x$ and $3x$ are like terms because they both have the variable $x$ raised to the power of 1.

Q: How do I combine like terms?

A: To combine like terms, you need to add or subtract the coefficients of the like terms. For example, in the expression $2x + 3x - 4y + 5y$ , the like terms are $2x$ and $3x$ , and $-4y$ and $5y$ . You can combine them as follows:

$2x + 3x = 5x$
$-4y + 5y = y$

The simplified expression is: $5x + y$

Q: What if I have a term with a negative coefficient?

A: If you have a term with a negative coefficient, you can combine it with other like terms by adding or subtracting the coefficients. For example, in the expression $-2x + 3x - 4y + 5y$ , the like terms are $-2x$ and $3x$ , and $-4y$ and $5y$ . You can combine them as follows:

$-2x + 3x = x$
$-4y + 5y = y$

The simplified expression is: $x + y$

Q: Can I combine like terms with different variables?

A: No, you cannot combine like terms with different variables. For example, in the expression $2x + 3y - 4z + 5w$ , the terms $2x$ and $3y$ are not like terms because they have different variables. You can only combine like terms with the same variable(s) raised to the same power.

Q: How do I know when to combine like terms?

A: You should combine like terms whenever you have an expression with multiple terms that have the same variable(s) raised to the same power. Combining like terms can help you simplify the expression and make it easier to work with.

Q: Can I use a calculator to combine like terms?

A: Yes, you can use a calculator to combine like terms. However, it's always a good idea to check your work by hand to make sure you get the correct answer.

Conclusion

In conclusion, combining like terms is an essential concept in algebra that allows us to simplify complex expressions and make them easier to work with. By identifying the like terms and combining them, we can write an equivalent expression that is easier to work with. We hope this Q&A guide has helped you understand the concept of combining like terms better.

Example Problems

Here are some example problems that you can try to practice combining like terms:

Simplify the expression: $2x + 3x - 4y + 5y$
Simplify the expression: $x^2 + 2x^2 - 3y^2 + 4y^2$
Simplify the expression: $5a + 2b - 3a - 4b$

Tips and Tricks

Here are some tips and tricks that you can use to help you combine like terms:

Make sure to identify the like terms before combining them.
Use the distributive property to simplify the expression.
Use the commutative property to rearrange the terms.
Use the associative property to group the terms.

By following these tips and tricks, you can become more confident and proficient in combining like terms and simplifying algebraic expressions.