Предмет: Математика, автор: Аноним

Перед представлением в цирке для продажи было заготовлено некоторое количество шариков. Перед началом представления было продано 3/8 всех воздушных шариков, а в антракте - еще 49 штук. После этого осталось треть всех шариков. Сколько шариков было первоначально? Плиз))) помогите решить по действиям

Ответы

Автор ответа: Аноним
0
Первоначально было  Х штук шаров
3/8X + 49 + 1/3X = X 
3X * 3 + 49 * 24 + 8X = 24X 
9X + 1176 + 8X = 24X 
24X - 17X = 1176 
7X = 1176 
X = 168 
 Ответ 168 шаров
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