Автор - sofia6587

Пж помогите быстрее Срочно
Решите уравнения номер 605
2/7 х = 1
9х = 1
1 5/8х = 1
1/2х = 1
7/15х = 1
3 2/5х = 1
100х = 1
2/13 х = 1
Заранее спасибо!

Ответ

Автор - oksanapodgornova

 frac{2}{7} x = 1 \ x = 1 div  frac{2}{7}  =  frac{7}{2}
9x = 1 \ x =  frac{1}{9}
1 frac{5}{8} x = 1 \  frac{13}{8}x = 1 \ x =  frac{8}{13}
 frac{1}{2} x = 1 \ x = 2
 frac{7}{15} x = 1 \ x =  frac{15}{7}
3 frac{2}{5} x = 1 \  frac{17}{5}x = 1 \ x =  frac{5}{17}
100x = 1 \ x =  frac{1}{100}
 frac{2}{13} x = 1 \ x =  frac{13}{2}

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