$\"\"$

The expression is $\"\"$

To simplify the expression follow the order of operations:

1. Evaluate the expressions inside grouping symbols.

2. Evaluate powers.

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

4. Add and/or Subtract in order from left to right.

A simple technique for remembering the order pf operations is turned into phrase

“Please Excuse My Dear Aunty Sally” $\"\"$

First evaluate within the parentheses

$\"\"$ (Add: 0.2 + 0.5 = 0.7)

Next operation is multiplication.

$\"\"$ (Multiply: $\"\"$ )

Next operation is subtraction.

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The value of the expression is 4.3.