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Chapter 1 Lesson 1

termDefinition
Value of the variable The numbers that can be represented by the variable
Variable expression An expression that contains a variable
Value of the expression The number named by the expression
Numerical expression An expression that names a particular number
Simplify an expression Replacing an expression containing variables by an equivalent expression with as few terms as possible
Substitution principle An expression may be replaced by another expression that has the same value
vaiable a symbol or letter used to represent one or more numbers
value of a numerical expression he number named by a numerical expression
evaluate an expression replacing each variable in a variable expression by a given value and simplifying the result.
Created by: Darily.Carrillo
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