Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for.
Select Your Location
Choosing your country and state helps us to provide you with the most relevant teaching resources for your students.
Ways to Pay
Unlock this resource, and over 15,000 other premium Teach Starter resources, by subscribing to Plus.