Subtracting Linear Expressions

The video tutorial explains how to simplify linear expressions by subtracting groups using both vertical and horizontal methods. It emphasizes the importance of distributing the negative sign and aligning like terms. The instructor demonstrates both methods with examples, highlighting the benefits of each approach. The video concludes with encouragement to practice and apply these methods.

What is the first step in subtracting one linear expression from another?

• Add the expressions directly.

• Multiply the expressions.

• Add the opposite of the second expression.

• Divide the expressions.

In the vertical method, what is crucial to ensure before adding the terms?

• Ignoring the constants.

• Subtracting the terms.

• Multiplying the terms.

• Aligning the terms vertically.

What is the result of simplifying the expression 7y + 5 - (8y - 6) using the vertical method?

• y - 1

• 15y - 1

• y + 11

• -y + 11

When using the horizontal method, what is the key step in simplifying expressions?

• Reversing the order of terms.

• Ignoring the constants.

• Identifying and combining like terms.

• Multiplying all terms by 2.

What is the simplified form of the expression -5y + 4 - (2y - 16) using the horizontal method?

• 3y - 20

• -7y + 20

• -3y + 20

• 7y - 20