Предмет: Математика, автор: milashkanyashka

Золушка посадила 45 розовых кустов. Чайные, белые и красные. Чайных было 28 штук, а красных было на 3 куста больше чем белых кустов. Сколько было красных кустов роз?

Ответы

Автор ответа: andrewnikitenk

45-28=17(белые и красные)
10(красные)
7(белые)

Автор ответа: love67

45-28=17(белые и красные)

Автор ответа: love67

(17+3):2=10 красных

Автор ответа: smeshinka193

всего - 45 кустов
чайных - 28
красных на 3 больше, чем белых
красных -?
Решение:
Пусть белых кустов будет х, тогда красных х+3, тогда
1)28+х+(х+3)=45 (всего кустов)
2)31+2х=45
3)2х=45-31
4)2х=14
5)х=7(кустов белых роз)
х+3=7+3=10 - красных кустов роз
Ответ: красных кустов было 10.

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