Simplifying Expressions with Subtraction (Example)

The video tutorial explains how to simplify an expression with multiple terms by converting subtractions to additions and using the commutative property to group and combine like terms. The process involves changing subtraction signs to addition, finding opposites, and reordering terms to simplify the expression to 4X - 1.

What is the first step in changing a subtraction to an addition in an expression?

• Multiply the number by 2.

• Change the subtraction sign to a division sign.

• Find the square of the number involved.

• Keep everything before the subtraction sign the same.

When changing the second subtraction to addition, what is the opposite of 6X?

• 6X

• -6X

• X6

• 6

Which property allows us to reorder and group like terms in an expression?

• Commutative Property

• Distributive Property

• Identity Property

• Associative Property

Identify the like terms in the expression: 7X, 3X, and -6X.

• 7X and 3X only

• 3X and -6X only

• 7X, 3X, and -6X

• None of the above

What is the simplified form of the expression after combining like terms?

• 6X - 2

• 3X + 2

• 4X - 1

• 5X + 1