diketahui rumus f (x)=2x-5 jika f (k)=-15 tentukan nilai k

f(x) = 2x - 5
f(k) = 2k - 5
-15 = 2k - 5
- 10 = 2k
k = -5

#maaf jika salah, semoga membantu ^^

f(k)=2k-5=-15
=2k=-15+5
=2k=-10
=k =-10/2
=k =-5