pada fungsi g :x →1/3 (x+4) ,jika g(a)= -2, maka nilai a=

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

g(x) = g(a)

g(x) = ⅓ (x+4)
-2 = ⅓ (x+4)
-2 = ⅓x + ⁴/3
-⅓x = ⁴/3 + 2
-⅓x = ⁴/3 + 6/3
-⅓x = 10/3
x = 10/3 : ⅓
x = 30/3
x = 10

Jadi, nilai x atau a adalah 10