Pada fungsi g(x)=1/3(x+4).jika g(a)=-2,tentukan nilai dari a!

g(x)=1/3(x-4)
g(a)=1/3(a-4)= -2
=1/3a-4/3= -2
=1/3a. = -2 +4/3
=1/3a. = -6/3 + 4/3
=1/3a. = 10/3
=a. = 10/3 : 1/3
= a = 30/3
a = 10