Answer
$-16$
Work Step by Step
Order of operations follow 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
Perform multiplication first to obtain:
$=4+(-2)-18$
Perform addition next, and then subtract to obtain:
$=2-18
\\=-16$
