The expression is .

                  (Substitute )

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 multiplication.

                        (Multiply: )

                        (Product of two same signs positive) \ \

                              (Product of two different signs negative)

Next operation is division.

                                   (Divide: )

Next operation is subtraction.

                                   (Subtract: )

Next operation is addition.

                                         (Add: 6 + 0.8 = 6.8) \ \

Next operation is division.

= 0.764                                        (Divide: )

The value of the expression is 0.764.