Question

Determine a raiz da função f(x) = 5/3 x + 20/9

Answer 1

f(x) = 5/3.x + 20/9

f(x) = 0

5/3.x + 20/9 = 0 (mmc = 9)

15.x + 20 = 0

15.x = -20

x =-20/15

x = -4/3

Espero ter ajudado.

Answer 2

f(x)= 5/3x + 20/9
5/3x + 20/9=0 
5/3x=-20/9 x1
x= 20/9 : 5/3
x= 4/3