SOLUTION: Simplify the expression 21-7*2+9 Show your work. Then, show how the solution is affected if addition and subtraction are not applied from left to right.

Algebra ->  Expressions-with-variables -> SOLUTION: Simplify the expression 21-7*2+9 Show your work. Then, show how the solution is affected if addition and subtraction are not applied from left to right.       Log On


   

Question 629927: Simplify the expression 21-7*2+9 Show your work. Then, show how the solution is affected if addition and subtraction are not applied from left to right.

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Applying the "order of operations":
21-7*2+9
21-(7*2)+9 (multiplication first)
21-14+9
(21-14)+9 (addition/subtraction from left to right)
7+9
16