The expression is

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

1.     Evaluate the expressions inside Brackets/Parenthesis (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 pf operations is turned into phrase

“Please Excuse My Dear Aunty Sally”

First operation is Evaluate the expressions Parenthesis.

             (Subtract: )

                (Rewrite the expression as division expression)

Next operation is multiplication.

                              (Multiplicative inverse property: )

The value of the expression is 1.