Question

Suatu fungsi F:x=5-3x tentukan nilai a jika f(a)=14
tolong dijawab +caranya

Answer 1

F(x) = 5-3x
f(a) = 14
x = a

Jawab:
14 = 5 - 3x
14 - 5 = -3x
9 = -3x
9 : 3 = x
3 = x
3 = a

Answer 2

F(a) = 5-3(a) = 14
       = 5 - 3a = 14
        = - 3a     = 14 - 5
        = - 3a    =   9
        =    a     =   9 / 3
        =    a     =    3