Final answer:
The simplified expression is x + 48.
Step-by-step explanation:
To simplify the expression (5x+20)-(4x-28) using the Distributive Property, we distribute the negative sign to each term inside the parentheses:
(5x+20) - (4x-28) = 5x + 20 - 4x + 28
Combining like terms, we get:
(5x - 4x) + (20 + 28) = x + 48
Therefore, the simplified expression is x + 48.
Learn more about Simplifying expressions using the Distributive Property