Question

subtract (x-y) from (4y-5x)

Answer 1

4y-5x-(x-y)
4y-5x-x+y
5y-6y

Answer 2

5y-6x because (4y-5x)-(x-y) is equal to 4y-5x-x+y is equal to 4y+y-5x-x=5y-6x.