Question

reduce -2y+5x+{x-2[x+3y-4(x+y)]-12x} porfavor ayuda

Answer 1

   -2y+5x+{x-2[x+3y-4(x+y)]-12x}
= -2y+5x+{x-2[x+3y-4x-4y]-12x}
= -2y+5x+{x-2[-3x-y]-12x}
= -2y+5x+{x+6x+2y]-12x}
= -2y+5x+x+6x+2y-12x
= -2y+2y+5x+x+6x-12x
=  0 + 0
=  0