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  .

First operation is evaluating expression within the parenthesis.

    (Product of two same signs is positive)

First operation is addition.

                 (Add: )

Next operation is subtraction.

                              (Subtract: )

                                       (Subtract: )

The simplified expression value is .