Respuestas

2013-01-07T05:15:22+01:00

[3(2x-y-2) -2 [3(x-2y+4) -5 (2x-3y+2)]

[6x-3y-6-2[3x-6y+4-10x+15y-10]

[6x-3y-6-2[9y-7x-6]

6x-3y-6-18y+14x+12

20x-21y+6

SALUDOS