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из задуманного числа вычетали 3 и увеличили в 2 раза и получили в 3 раза меньше задуманного какое задуманное число?
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Предмет:
Алгебра -
Автор:
cookiecubq - 5 лет назад
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Ответы 1
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(3х-3)*2=х
(3х-3)=х/2
3х-3=0,5х
(3х-3)/х=0,5
3х/х-3/х=0,5
3-3/х=0,5
3/х=3-0,5
3/х=2,5
х=3/2,5
х=1,2
3х=3,6
Задуманное число = 3,6.
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Автор:
hailie - 5 лет назад
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