Respuesta :
Answer:
The answer to your question is  35x - 35y + 21
Step-by-step explanation:
Data
Simplify   0.5(20x - 50y + 36) - 0.25(-100x + 40y - 12)
Expand
            10x - 25y + 18 + 25x - 10y + 3
Group like terms
           (10x + 25x) + (-25y - 10y) + (18 + 3)
Result
           35x - 35y + 21
The answer is the last choice