Final answer:
To find the sum, combine like terms and perform addition and subtraction.
Step-by-step explanation:
To find the sum of the given expressions, we need to combine like terms by adding the coefficients of 'w'. The given expressions are:
(2w - 9) + (− 4w - 5)
Combining the like terms '2w' and '-4w', we get:
2w + (-4w) = -2w
Combining the constants '-9' and '-5', we get:
-9 + (-5) = -14
Therefore, the sum is:
-2w - 14
Learn more about Combining like terms in algebraic expressions