Defining the Expressions for A and B

Oct 13, 2025 by talynt.org 102 views

Introduction

In this article, we will explore the concept of algebraic expressions and how to manipulate them to find a specific expression. We will start by defining the given expressions for A and B, and then use these expressions to find the value of 3A + B in standard form.

Defining the Expressions for A and B

We are given two expressions:

A = 2y + 8
B = y + 2

These expressions are defined in terms of the variable y.

Finding the Value of 3A + B

To find the value of 3A + B, we need to substitute the expressions for A and B into the equation.

3A + B = 3(2y + 8) + (y + 2)

Expanding the Equation

Now, we need to expand the equation by multiplying the terms inside the parentheses.

3A + B = 6y + 24 + y + 2

Combining Like Terms

Next, we need to combine the like terms in the equation.

3A + B = 7y + 26

Conclusion

In this article, we have found the expression for 3A + B in standard form. We started by defining the expressions for A and B, and then used these expressions to find the value of 3A + B. The final expression is 7y + 26.

Step-by-Step Solution

Here is the step-by-step solution to the problem:

Define the expressions for A and B: A = 2y + 8 and B = y + 2.
Substitute the expressions for A and B into the equation 3A + B.
Expand the equation by multiplying the terms inside the parentheses.
Combine the like terms in the equation.
Simplify the equation to find the final expression.

Final Answer

The final answer is 7y + 26.

Frequently Asked Questions

What is the expression for 3A + B in standard form?
How do we find the value of 3A + B?
What are the steps to solve the problem?

Answer to Frequently Asked Questions

The expression for 3A + B in standard form is 7y + 26.
To find the value of 3A + B, we need to substitute the expressions for A and B into the equation and then simplify the equation.
The steps to solve the problem are:
1. Define the expressions for A and B.
2. Substitute the expressions for A and B into the equation.
3. Expand the equation by multiplying the terms inside the parentheses.
4. Combine the like terms in the equation.
5. Simplify the equation to find the final expression.

Conclusion

Q&A: Finding an Expression for 3A + B

Q: What is the expression for A in terms of y?

A: The expression for A is 2y + 8.

Q: What is the expression for B in terms of y?

A: The expression for B is y + 2.

Q: How do we find the value of 3A + B?

A: To find the value of 3A + B, we need to substitute the expressions for A and B into the equation and then simplify the equation.

Q: What are the steps to solve the problem?

A: The steps to solve the problem are:

Define the expressions for A and B.
Substitute the expressions for A and B into the equation.
Expand the equation by multiplying the terms inside the parentheses.
Combine the like terms in the equation.
Simplify the equation to find the final expression.

Q: What is the final expression for 3A + B in standard form?

A: The final expression for 3A + B in standard form is 7y + 26.

Q: Can we simplify the expression further?

A: Yes, we can simplify the expression further by combining the like terms. However, in this case, the expression is already in its simplest form.

Q: What are some common mistakes to avoid when solving this problem?

A: Some common mistakes to avoid when solving this problem include:

Not substituting the expressions for A and B into the equation.
Not expanding the equation by multiplying the terms inside the parentheses.
Not combining the like terms in the equation.
Not simplifying the equation to find the final expression.

Q: How do we check our answer?

A: To check our answer, we can substitute the expressions for A and B into the equation and then simplify the equation to see if we get the same final expression.

Q: What are some real-world applications of this problem?

A: This problem has many real-world applications, including:

Algebraic expressions in mathematics.
Manipulating algebraic expressions in mathematics.
Simplifying algebraic expressions in mathematics.

Conclusion

In this Q&A article, we have answered some common questions about finding an expression for 3A + B in standard form. We have covered topics such as defining the expressions for A and B, substituting the expressions into the equation, expanding the equation, combining like terms, and simplifying the equation. We have also discussed some common mistakes to avoid and how to check our answer.