I need help solving this subtraction (xy-ab-3)- (xy-9ab-1) the answe is __ab-___

Let me critique your work.

well I think the answer is 8 ab-2 that's why I wanted was my answer correct.

correct.

To solve the subtraction (xy - ab - 3) - (xy - 9ab - 1), we can simplify and combine like terms.

Step 1: Distribute the negative sign to the terms within the second parentheses:
(xy - ab - 3) - xy + 9ab + 1

Step 2: Remove the parentheses and rearrange the terms:
xy - ab - 3 - xy + 9ab + 1

Step 3: Combine like terms:
(xy - xy) + (-ab + 9ab) + (-3 + 1)

Step 4: Simplify:
0 + 8ab + (-2)

Step 5: Combine like terms:
8ab - 2

Therefore, the answer to the given subtraction is "8ab - 2".