Предмет: Математика, автор: usupovadilbek

Периметр треугольника 27,8 см. Одна из его сторон меньше другой на 3,5 см, но больше третьей на 2,7 см. Найдите длину большей из сторон

Ответы

Автор ответа: karen0906

1 сторона- ×
2 сторона- ×+3,5
3 сторона -×-2,7
Р=27,8
×+×-+3,5+×-2,7=27,8
3×=27
×=27÷3
×=9 см - 1 сторона
9+3,5=12,5 см- 2 сторона
9-2,7=6,3 см- 3 сторона

Автор ответа: karen0906

уравнение выглядит так х+×+3,5+×-2,7=27,8

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