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Thesanek30rusMaps
@Thesanek30rusMaps
October 2021
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Найдите такие значения a и b, чтобы числа 5, a и b были соответственно пропорционально числам 2/7, 2 и 8
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Составим первую пропорцию
5 : 2/7 = a : 2
Отсюда a = 5*2 / (2/7) = 10/2*7=35
Составим вторую пропорцию
5 : 2/7 = b : 8
Отсюда b = 5*8/(2/7)=5*8/2*7=140
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Answers & Comments
Verified answer
Составим первую пропорцию5 : 2/7 = a : 2
Отсюда a = 5*2 / (2/7) = 10/2*7=35
Составим вторую пропорцию
5 : 2/7 = b : 8
Отсюда b = 5*8/(2/7)=5*8/2*7=140