Предмет: Математика, автор: elenakolodkina1

Периметр треугольника равен 18 см. Первая сторона на 4 см короче второй,а вторая на 1 см короче третьей. Найди длину каждой стороны треугольника,если длины выражаются целым числом сантиметров.

Ответы

Автор ответа: HorzeLove

сейчас решим.Все очень просто)

х-1 + х-1-4 + х=18
3х=24.
x=24:3
х=8
x - третья сторона
вторая сторона - x-1=8-1=7 см
первая сторона (х-1)-4=7-4=3 см

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