Answer
$19$
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.
Let's evaluate expressions within parentheses first:
$=-4(-7) + 3(-3)$
There are no exponential expressions, so now, we multiply from left to right, paying attention to the signs. The product of two numbers with the same sign is positive while the product of two numbers with different signs is negative.
$=28 - 9$
Now, we add or subtract, from left to right:
$=19$