chapet 1
A symbol (usually a letter) that represents one or more numbers
What is variable or pronumeral
operations that undo one another.
What are inverse operations?
mathematical phrase that can include numbers, variables, and operation symbols
What is an algebraic expression?
An equation that is true for every value of the variable.
What identity
any number that you can write in the form a/b, where a and b are integers and b is not equal to 0
What is rational number? ( also a fraction)
opposite operation of addition.
What is subtraction
two numbers that are the same distance from zero on a number line but lie in opposite directions.
What is opposites e.g 2 and -2