two or more equations with the same solution

operation that unddoes another, such as addition and subtraction

an equation that is true for every value of the variable

set with no elements shown by the symbol { }

a value for the variable that makes an equation true

an equation that contains two operations

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Pre-Algebra Ch 8

Vocabulary for Pre-Algebra Ch. 8

Term	Definition
empty set	another name for a null set
equivalent equations	two or more equations with the same solution
inverse operations	operation that unddoes another, such as addition and subtraction
identity	an equation that is true for every value of the variable
null set	set with no elements shown by the symbol { }
solution	a value for the variable that makes an equation true
two-step equation	an equation that contains two operations