Write an addition problem that is equivalent to -5- (-8)

I don't know if I understood correctly but here is the answer I think could be right.

-5-(-8)=3

2+1=3

the answer to this would be 5x^3-6x^2-24 over 3x^2

hope this if needed hmu

i believe so, according to my "strange" way of figuring out weird math problems like this.