Respostas

2014-05-11T20:04:58-03:00
(X+1/2)x=4x-7x/2

Evidencie o x no segundo termo

(X+1/2)x = (4-7/2)x

Simplifique o x

x+1/2 = 4-7/2

Isole o x

x=-7/2-1/2

Faça a conta

x = -8/2
x = -4