Помогите пожалуйста. №985. Created by Derrick. matematika-ru

Помогите пожалуйста. №985...

Валиульчик А) = 1/4 * (16-15) /20 = 1/4 * 1/20 = 1/80
б) = 2/30 + 1/15 = 1/15 Х 1/15 = 2/15
в) = 14 * (6 + 4 + 3) /12 = 14 * 13/12 = 91/6 = 15целых 1/6
г) = 6/21 -3/28 = (24 - 9) / 84 = 15/84 = 5/28

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кляча

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Все готово )) пожалуйста)

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