Question

A VER QUIEN SE ATRVE A HACER PERO EXPLICANDOLAS:GRAN RETO *85-4X{-3+7X[-5+4X(2-1X3)]} *{14-10X[32+6X-5-4]X-1+79} *70-70[(-2-2X)2-2X(5-5X4)-3(3X2)

Answer 1

85-4.{-3+7.[-5+4.(2-1.3)]}=
85-4.{-3+7.[-5+4.(2-3)]}=
85-4.{-3+7.[-5+4.(-1)]}=
85-4.{-3+7.[-5-4]}=
85-4.{-3+7.[-9]}=
85-4.{-3-63}=
85-4.{-66}=
85+264=349


{14-10.[32+6.(-5)-4]. (-1)+79}=
{14-10.[32-30-4].(-1)+79}=
{14-10.[-2].(-1)+79}=
{14-20+79}=73

70-70.[(-2-2).2-2.(5-5.4)-3.(3.2)]= 
70-70.[(-4).2-2-(5-20)-18]=
70-70.[-8-2+15-18]=
70-70.[-13]=
70+910= 980