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 .

                       (Rewrite the expression as division expression)

According order of operations inside the grouping symbols should be evaluated first.

So, the first operation is evaluating expression in the denominator.

                                 (Divide: )

Next operation is evaluating expression in the numerator.

                                             (Subtract: )

Next operation is division.

                                                     (Divide: )

The value of the expression is 9.