Question

add

(4t^8-7t^3+8t^2+8)+(8t^6+2t^3-5t)

@shkrina @Jamierox4ev3r

Answer 1

4t^8-5t^3+8t^2+3t+8 is your simplified answer

Answer 2

because you add all of the like terms, and this is not a statement in which you can solve for any variables