-(19/25+2/5*(-0,6))*0,8=
= -(19/25+2/5*(-3/5))*0,8=
= -(19/25-6/25)*0,8=
= -(13/25)*0,8=
= -13/25*0,8=
= -13/25*4/5=
= - 52/125=
ответ: - 52/125
-(19/25+2/5*(-0,6))*0,8=
= -(19/25+2/5*(-3/5))*0,8=
= -(19/25-6/25)*0,8=
= -(13/25)*0,8=
= -13/25*0,8=
= -13/25*4/5=
= - 52/125=
ответ: - 52/125