Предмет: Математика, автор: БьянкаМинскач

Реши задачу: Угол разделили на 2 части в отношении 7:9 . Чему ровно величина угла если разность величин его частей составляет 20 ?

Ответы

Автор ответа: maryzharikova

Составим уравнение :
7х-9х=20
-2х=20
х=-10
7*(-10)= -70
9*(-10)=-90

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