<PRE><B>Question 566110</B>
In mathematics and computer programming, the order of operations (sometimes called operator precedence) is a rule used to clarify unambiguously which procedures should be performed first in a given mathematical expression.

Parenthesis, Exponent, Multiplication, Division, Add, and Subtraction also known 

as:  Please Excuse My Dear Aunt Sally (PEMDAS)
 

  5 + [4 + ( 12-4) ÷ 2]

= 5 + [4 + (8)÷ 2 ] 

= 5 + [ 4 + 4 ]

= 5 + 8

= 13</PRE>