Предмет: Математика, автор: vanya715

12×(12/24-7/12-1/6) помогите решить

vanya715: Мобильный телефон стоил 3500 рублей.через некоторое время цену на эту модель снизили до 2800 рублей.на сколько процентов была снижена цена?

ladysarkazm: на 20%

vanya715: Спасибо

Ответы

Автор ответа: ladysarkazm

12(1/2-7/12-1/6)=12((6-7-2)/12)=12*(-1/4)=-3

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