Diketahui fungsi f(x)=2x+3f\left(x\right)=2x+3f(x)=2x+3 dan g(x)=x−4g\left(x\right)=x-4g(x)=x−4. Jika (f+g)(a)=8\left(f+g\right)\left(a\right)=8(f+g)(a)=8 maka (f−g)(a+1)=....\left(f-g\right)\left(a+1\right)=....(f−g)(a+1)=....
101010
−16-16−16
555
−9-9−9
111111