0
How the order of operations determines how you evaluate an algebraic expression?
Wiki User
∙ 13y ago
Well, if I understand what you're asking, the order of operations is simple and helpful. For example, if you have this equation (with "a" being the variable): 3a - 4 * (18-14) = 20
then you first do parentheses (P in PEMDAS). So, the answer to 18-14 would be 4. Then, since there are no exponents (E), you multiply (M) 4 * 4, which equals 16. Next, since the remaining part of the equation is 3a - 16 = 20, you add (A) 16 to the other side to balance out the equation. Now, all is left is 3a = 36. Now, you just divide (the remaining part of the equation does NOT follow the rule. It goes out of order for some reason). The answer to a is 12. The equation does follow the rules of the order of operations. At the point 3a-16=20, you cannot combine any more terms in the order of addition or subtraction because their aren't any like terms to combine. In algebra, you are solving for the unknown variable, in this case (a). In order to solve for (a), you have to isolate the variable. You do this by balancing out the equation and adding 16 to both sides of the equation, therefore being left with 3a=36. Then you divide by three to further isolate the variable. When left with unlike terms, in essence, you do the order of operations in reverse.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
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.
What does it mean to evaluate an algebraic expression?
meaning to evaluate the variable in an expression. An algebraic expression is also a problem that contains no equals sign and you don't solve it, rather you simplify it.It means to solve something.
How do you evaluate an algebraic expression such as 7 plus d?
utujaj
How do you find a specific numerical value for an algebraic expression?
you have to deduce the variable and evaluate the expression.
To find the value of a numerical of algebraic expression?
Evaluate using PEMDAS
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.
What is it called to find the value of an algebraic expression?
To find the value of an algebraic expression is to evaluate it.
What is it to find the value of an algebraic expression?
to simplify!!* * * * *No. It is to EVALUATE.
What do you need to be given to evaluate an algebraic expression?
A variable
What does it mean to evaluate an algebraic expression?
meaning to evaluate the variable in an expression. An algebraic expression is also a problem that contains no equals sign and you don't solve it, rather you simplify it.It means to solve something.
How do you evaluate an algebraic expression such as 7 plus d?
utujaj
How do you find a specific numerical value for an algebraic expression?
you have to deduce the variable and evaluate the expression.
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 an algebraic 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.
To find the value of a numerical of algebraic expression?
Evaluate using PEMDAS
To find the value of a numerical or algebraic expression what word goes to this definnation?
evaluate. : )
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.
