Order of Operations:

To simplify the expression follow the order of operations: (PEMDAS)

1.   Evaluate the expressions inside the Parenthesis/Brackets (P).

2.   Evaluate Powers/Exponents (E).

3.   Multiply and/or Divide in order from left to right (MD).

4.   Add and/or Subtract in order from left to right (AS). \ \

A simple technique for remembering the order of operations is turned into phrase "Please Excuse My Dear Aunty Sally"

The expression is  .

          (Substitute )

Apply the order of operations (PEMDAS).

First operation is evaluating expression inside the parenthesis.

                       (Add: )

Next operation is subtraction.

                         (Subtract: )

The value of the expression is .