Question

-(2x-2y)-{[3x-(2y-z)-4x]-(3y-2z)}

Answer 1

-(2x-2y)-{[3x-(2y-z)-4x]-(3y-2z)}

-2x+2y-[(3x-2z+z-4x) - 3y + 2z]     Agrupación de términos semejantes

-2x+2y - [(-x-2y+z) - 3y +2z]

-2x+2y - [ -x - 2y+z - 3y + 2z]

-2x+2y - [-x -5y + 3z]

-2x+2y+x+5y-3z

-x + 7y - 3z

Saludos :)