Proszę o pomoc oblicz pamiętając o kolejności działań : A) (-2)+(-6)-8-(-4)= B) 12-(-16)-6+20= C) (-20)-(-5)+(-17)-(-3)= D) (-4+7)-(10-12)= E) [-(-9)-(-4)-(-10)-(-11)-(-16)]-(50-13)= F) 200-111-53-15-9-7-5= G) -50-99+100-89+90-79+80-69+70= H) -1

a).(-2)+(-6)-8-(-4) = -2-6-8+4 = -8-8+4 = -16+4 = -12 b).12-(-16)-6+20 = 12+16-6+20= 28-6+20=22+20=42 c).(-20)-(-5)+(-17)-(-3) = -20+5-17+3= -15-17+3= -32+3 =-29 d).(-4+7)-(10-12) = 3-2 = 1 e).[-(-9)-(-4)-(-10)-(-11)-(-16)] -(50-13) = [9+4+10+11+16] -37 =    =[23+11+16] -37 = [34+16] -37 = 50-37 = 13 f).200-11-53-15-9-7-5 =189-53-15-9-7-5 =136-15-9-7-5 =121-9-7-5 =    =112-7-5 =105-5 =100 g).-50-99+100-89+90-79+80-69+70 = -149+100-89+90-79+80-69+70 =      = -49-89+90-79+80-69+70 = -138+90-79+80-69+70 =      = -48-79+80-69+70 = -127+80-69+70 = -47-69+70 = -116+70 = -46 h).-10+9-8+7-6+5-4+3-2+1 = -1-8+7-6+5-4+3-2+1 = -9+7-6+5-4+3-2+1 =      = -2-6+5-4+3-2+1 = -8+5-4+3-2+1 = -3-4+3-2+1 = -7+3-2+1 =      = -4-2+1 = -6+1 = -5