Landon is working one plans for a 12-acre housing development. A park will cover 2 1/2 acres, and paved areas will take 1 3/4 acres. How many acres are left for home sites??? Please show work, for how you did it

2 2/4 + 1 3/4 = 3 5/4 = 4 1/4

12 = 11 4/4

11 4/4 - 4 1/4 = ?