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Evaluating an Expression with One Variable

A mathematical expression can have a variable as part of the expression. If x=3, the expression 7x + 4 becomes 7 * 3 + 4 which is equal to 21 + 4 or 25. To evaluate an expression with a variable, simply substitute the value of the variable into the expression and simplify.






Evaluate the Expression

=  


You have correct and   incorrect.  This is percent correct.

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