Respuestas

2013-04-09T17:36:20+02:00

( 10x - 55 ) / 2 = 10x - (95 - 10x) /2
5x - 55/2 = 10x - 95/2 + 5x
5x - 55/2 = 15x - 95/2
20 = 10x
x = 2

Saludos!!