In mathematics and computer sciences, the Order of Operations is a collection of rules to define which procedures to perform first in order to evaluate a given mathematical expression.
In mathematics and most computer languages, multiplication precedes addition. For example, using the formula the expression the awnser would be 14, not 20 because multiplication precedes addition.
When Exponents were introduced in the 16th-17th Century, Exponents took precedence over addition and multiplication. For example, because exponents take precedence over addition in this expression. To change the Order of Operations, Parentheses/Brackets must be used.