Find a(x)=b(x)-c(x) if b(x)=-4-9x-3-2x and c(x)=-15+7

Type in the answer starting with a(x)=
Hint: Start by writing out b(x)-c(x). You are subtracting the entire c(x).

I dont need the answer anymore i got it now, if anyone in the future needs it here it is: a(x)=-14+4x