Pada fungsi f : x _3x+2 nilai a jika f(a)=38

F(x) = 3x + 2
f(a) = 3a + 2
38 = 3a + 2
38 – 2 = 3a
36 = 3a
a = 36 : 3 = 12

F(x)=3x+2

f(a)=3a+2
38=3a+2
36=3a
a=12