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Автор - di4901111

пожалуйста быстро (10 - х) : 1 1/15 = 6 1/4

Ответ

Автор - сок111213

(10 - x) div 1 frac{1}{15}  = 6 frac{1}{4}  \ 10 - x = 1 frac{1}{15}  times 6 frac{1}{4}  \ 10 - x =  frac{16 times 25}{15 times 4}  \ 10 - x =  frac{4 times 5}{3}  \ 10 - x =  frac{20}{3}  \ x = 10 -  frac{20}{3}  \ x = 9 frac{3}{3}  - 6 frac{2}{3}  \ x = 3 frac{1}{3}

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