Zapisz najprościej: a) 1-{x-[-(x-1)-x-(1-x)+x]-(x-1)} b) x-{1-[x-(1-x)-(x-1)+x]-(x-1)}

1-[x-(x-1)-x-(1-x)+x]-(x-1)= =1-[x-x+1-x-1+x+x]-x+1= =1-x+x-1+x+1-x-x-x+1= =-2x+2 x-[1-[x-(1-x)-(x-1)+x]-(x-1)= =x-[1-[x-1+x-x+1+x]-x+1= =x-[1-x+1-x+x-1-x]-x+1= =x-1+x-1+x-x+1+x-x+1= =2x