Question

When we isolate a variable we use _________ (what you do to one side, you do to the other). A. Addition Property of Equality. B. Subtraction Property of Equality. C. Multiplication Property of Equality. D. Division Property of Equality.

Answer 1

When we isolate a variable, we use the multiplication or division property of equality. This allows us to perform the same operation on both sides of an equation, which does not change its equality.

Step-by-step explanation:

Multiplication or division by the same number on both sides of an equation does not change equality. Remember that multiplication or division should apply to every term on either side of the equality. Enclose the side with more than one term in small brackets and then do the multiplication or division operation so that it applies to each term in the bracket. Multiplying or dividing both sides of the equation by the same number allows us to isolate a variable.

Learn more about Isolating variables