Answer
$0$
Work Step by Step
To simplify this expression, we need to follow the order of operations using the acronym PEMDAS, which states that we evaluate what is in parentheses first, then exponents, then multiplication and division from left to right, and, finally, addition and subtraction from left to right.
There are no expressions within parentheses that we need to evaluate, so we turn our attention to the exponential expression:
$=20 - (3)(12) + 16$
Now, we multiply from left to right, paying attention to the signs:
$=20 - 36 + 16$
Now, we add or subtract, from left to right:
$=-16 + 16$
Add or subtract again:
$=0$
