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The expression is $\"\"$

To simplify the expression following order of operations to performed:

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.

$\"\"$

According order of operations inside the grouping symbols should be evaluated first. Subtract the numbers within the parenthesis.

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

Next operation is multiplication.

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

Next operation is addition.

$\"\"$ (Add: $\"\"$ )

$\"\"$

The value of the expression is 45.