(х-2/х+1)-(5/1-х)-(хкв+27/хкв-1)=0

Ответ:

file:///C:/Documents%20and%20Settings/User/%D0%A0%D0%B0%D0%B1%D0%BE%D1%87%D0%B8%D0%B9%20%D1%81%D1%82%D0%BE%D0%BB/P211110_14.30.jpg

Источник: https://znanija.com/task/13822