Предмет: Алгебра, автор: agent9920

(4z)/(8z)-(2m)/(m)+(6m)/(5m)+(5z)/(7z)

Ответы

Автор ответа: chamomile03

$frac{4z}{8z}- frac{2m}{m}+ frac{6m}{5m}+ frac{5z}{7z}= frac{1}{2}- frac{2}{1} + frac{6}{5}+ frac{5}{7}= frac{1*35-2*70+6*14+5*10}{70} = \ \ = frac{35-140+84+50}{70} = frac{29}{70}$

Автор ответа: agent9920

упрастить надо

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