Answer:
4.9x + 5y
Step-by-step explanation:
[tex](9.4x - 3y) - (4.5x - 8y) \\ = 9.4x - 3y - 4.5x + 8y \\ = 9.4x - 4.5x + 8y - 3y \\ = 4.9x + 5y[/tex]