Variable: a symbol for a value that is unknown, , Expression: numbers, symbols, and operators grouped together that show the value of something, , does not have an equal sign, Equation: what is on the left is equal to what is on the right, says when two things are equal, , Evaluate: to calculate the value, to find value, Verify: to check that something is true, to prove that something is correct,

Vocabulary Practice: Variables and Equations

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