To multiply or divide real numbers, multiply or divide the absolute values of the numbers. If the numbers have the same sign, the product or quotient is positive. If the numbers have different signs, the product or quotient is negative.

Simplify each expression.

Terms with exactly the same variable factors arc like terms. You can combine like terms and use the distributive property to simplify expressions. Distributive Property For all real numbers a, b, and c, a(b + c) = ab + ac and a(b - c) = ab - ac.

Simplify each expression.

Use properties of numbers to simplify expressions. Use the Commutative Property to change order. Use the Associative Property to change grouping.

Which property does each equation illustrate?