zapisz w jak najprostszej postaci a) 5(x-2)+2x b) -4(2y+1)+y c) 5y-3(y-1) d) (12x-4):4+1+x e) -3(x-7)-(x+2) f) (x+2)-3(2x-4)+2(x-1)

a) 5(x-2)+2x=5x+10+2x=7x+10 b) -4(2y+1)+y=-8y-4+y=-7y-4 c) 5y-3(y-1)=5y-3y+3=2y+3 d) (12x-4):4+1+x=3x-1+1+x=4x e) -3(x-7)-(x+2)=-3x+21-x-2=-4x+19 f) (x+2)-3(2x-4)+2(x-1)=x+2-6x+12+2x-2=-2x+12