here is the question and again if you were on the other question and u get it right then i will give brainilst on both

Answer:
[tex]3x^3-3y-3[/tex]
Step-by-step explanation:
[tex]3-3+x^{3}+6x^{3}-3y-3-4x^{3}=3x^3-3y-3[/tex]