tentukan nilai a dari f(a)=27 jika diketahui rumus suatu fungsi f(x)=4x-5

f(x) = 4x - 5
f(a) = 4a - 5
27 = 4a - 5
27 + 5 = 4a
32 = 4a
32 :4 = a
8 = a

semoga membantu^_^

4x - 5 = 27
4x = 32
x = 8