Предмет: Математика, автор: divin012

В прямоугольнике длина на 10 см больше ширины. Составьте буквенные выражения периметра треугольника обозначив, ширину за букву х.

Ответы

Автор ответа: dedadade

P= (x+(x+10))•2
Ну вроде так

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