Resposta :
Vamos lá:
a. -5x + 2 = 0 -> -5x = -2 (-1) -> 5x=2 -> x = 0,4
b. -5x + 2 = 11 -> -5x = 9 -> x = -1,8
c. -5x + 2 = -1/3 -> -5x = 5/3 -> X=-5/15 -> x=-1/3
a. -5x + 2 = 0 -> -5x = -2 (-1) -> 5x=2 -> x = 0,4
b. -5x + 2 = 11 -> -5x = 9 -> x = -1,8
c. -5x + 2 = -1/3 -> -5x = 5/3 -> X=-5/15 -> x=-1/3