The Multiplication Property of Equality states that if a equals b, what must also be true for any number c?

1. The property allows both sides of an equation to be multiplied by the same number c without changing whether it is true. 2. If a equals b, multiplying a and b by c keeps both sides equal to each other. 3. Subtracting c, dividing by c, or mixing addition and subtraction are different properties entirely, not the multiplication property. _Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 2 "Solving Linear Equations and Inequalities", section 2.2 Solve Equations using the Division and Multiplication Properties of Equality_