Answer
$1$
Work Step by Step
RECALL:
The order of operations follows the PEMDAS rule.
First Priority: P - Parentheses
Second Priority: E - Exponents
Third Priority: M/D - Multiplication or division, whichever comes first from the left
Fourth Priority: A/S - Addition or subtraction, whichever comes first from the left
Simplify within the parentheses to obtain:
$=-6-(-7)$
Subtract to obtain:
$=-6+7
\\=1$
