Автор - Ihavebackbac

решите уравнение #618. плиз..​

Ответ

Автор - jekadva

Ответ:

Пошаговое объяснение:

(1-frac{7}{10})x=2frac{1}{4} \ frac{3}{10}x=frac{9}{4}\x=frac{9}{4}*frac{10}{3}\ x=frac{15}{2}\x=7frac{1}{2}\ \(frac{1}{4}+frac{1}{5})x=1frac{4}{5} \ frac{5+4}{20} x=1frac{4}{5}\ frac{9}{20}x=frac{9}{5}\ x=frac{9}{5}*frac{20}{9} \ x=4\ \ (3frac{1}{8} +1frac{3}{4})x=2frac{1}{6}\ (3+1+frac{1+6}{8})x=2frac{1}{6} \ 4frac{7}{8}x=2frac{1}{6}\x=2frac{1}{6}:4frac{7}{8}\ x=frac{13}{6} *frac{8}{39}\ x=frac{4}{9}\ \(2frac{1}{12} -1frac{5}{6})x=frac{3}{4} \ (2frac{1}{12} -1frac{10}{12})x=frac{3}{4} \ frac{3}{12}x=frac{3}{4} \ x=frac{3}{4}*frac{12}{3} \ x=3

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