Combine like terms to simplify the expression:

-7x + 3y - 2 + 6x - 1 - y2

-x+y-3

this is the final answer

It seems that the expression is - 7x + 3y - 2 + 6x - 1 - y^2

like terms:

-7x + 6x = - x

3y stands alone

-2 - 1 = - 3

- y^2 stands alone

Answer: - x + 3y - 3 - y^2

[note: if the last term is not y^2 but 2y, then you have to combine + 3y - 2y = y and the answer would be - x + y - 3]