# Evaluate the Expression 3x(2x-7)

When evaluating an algebraic expression, remember that letters stand for numbers.

Evaluate the expression below by substituting the numerical value of x.

3x(2x-7) when x = 5

### Comments for Evaluate the Expression 3x(2x-7)

 Mar 05, 2013 Evaluate by: Staff Answer Part I Substitute the number 5 for every x in the expression. Evaluate the expression using the PEMDAS order of operations PEMDAS order tells you what to do first, second, . . . etc. PEMDAS stands for: parentheses, exponents, multiplication, division, addition, subtraction Step 1: evaluate PARENTHESES PEMDAS order of evaluation: PARENTHESES, exponents, multiplication, division, addition, subtraction PEMDAS also applies to the expression within the parentheses. In this case 2 * 5 is evaluated first, and -7 is evaluated second. -------------------------------------------

 Mar 05, 2013 Evaluate by: Staff ------------------------------------------- Part II Step 2: evaluate EXPONENTS PEMDAS order of evaluation: parentheses, EXPONENTS, multiplication, division, addition, subtraction There are no exponents to evaluate. Step 3: MULTIPLICATION PEMDAS order of evaluation: parentheses, exponents, MULTIPLICATION, division, addition, subtraction Step 4: DIVISION PEMDAS order of evaluation: parentheses, exponents, multiplication, DIVISION, addition, subtraction There is no division which needs to be evaluated. Step 5: evaluate ADDITION & SUBTRACTION PEMDAS order of evaluation: parentheses, exponents, multiplication, division, ADDITION, SUBTRACTION There is no addition or subtraction which needs to be completed. The final answer is: Thanks for writing. Staff www.solving-math-problems.com

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