Предмет: Математика, автор: klient7410

помогите пожалуйста 2,4:x=4,5:30

jekadva: x=16

Ответы

Автор ответа: hlopushinairina

2.4/x=4.5/30;⇒
4.5x=2.4·30;⇒4.5x=72;
x=72/4.5=16

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