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everywhere you see the variable, put it's value there instead, then do all of the math (+-x/)

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Q: How do you substitute and evaluate an expression with variables?
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Evaluate the expression 17P2?

To "evaluate" an expression, you need to know the value for the variables.


To evaluate a function for a specific value substitute the value in for what?

You substitute the variable for its value. Or you substitute the variables for each of the values.


How do you evaluate in mathematics?

Evaluate means find the value of.To evaluate an expression, if there are any variables replace them by their values. Then, using BIDMAS/PEMDAS, calculate the value of the expression.Evaluate means find the value of.To evaluate an expression, if there are any variables replace them by their values. Then, using BIDMAS/PEMDAS, calculate the value of the expression.Evaluate means find the value of.To evaluate an expression, if there are any variables replace them by their values. Then, using BIDMAS/PEMDAS, calculate the value of the expression.Evaluate means find the value of.To evaluate an expression, if there are any variables replace them by their values. Then, using BIDMAS/PEMDAS, calculate the value of the expression.


What is 14-y if I rewrite this expression to substitute y4. Then evaluate each expression?

10


How do you do evaluate expression?

You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.


How do you evaluate a expression?

Replace all the variables in the expression by their numerical values and calculate the result.


How do you evaluate equations?

To evaluate means to find the value. Substitute the values of the variables and calculate the value. [You may need to solve for the values of the variables first.]


How do you evaluate an expression when given values for the variables?

You replace each variable by its value. Then you do the indicated calculations.


What does it mean to evaluate an expression?

To evaluate an expression is nothing but to operate the given expression according to the operators given in the expression if it is evaluable i.e, it could be convertable.


Evaluate the variable expression for x equals 3?

Take 3 and substitute into the expression given to you but not mentioned in the question here and evaluate the expression. "Sub and Solve" I say.


How do you evaluate an algebraic expression when I know the value of each variable?

Replace each variables in the algebraic expression by its [known] value and calculate the value (ie evaluate) of the algebraic expression.


How do you evaluate a math expression?

The evaluate a algebraic math expression you first must substitute a number for each variable. Then you must perform the operation in the correct order.