Предмет: Математика, автор: bilerada

Бабуся продавала кошик груш. Перший покупець придбав у неї половину всіх груш і ще 2 груші другий узяв половину решти й ще 3 груші третій купив усі груші що залишилися 5 штук. Скільки груш було в кошику спочатку
на дії не Х

Ответы

Автор ответа: miltym16

0

× груш было у бабушки
(0,5× + 2) груш - купил первый покупатель
X - (0,5×+2) = x-0,5×-2 = 0,5x-2 груш - осталось у бабушки
(0,5×-2):2 + 3 = 0,25× -1 + 3 = 0,25×+2 груш - купил второй покупатель
0,5×+2 + 0,25× + 2 + 5 = ×
0,75x+9=x
X-0,75× = 9
0,25x = 9
×= 9:0,25
× = 36 (груш) - было у бабушки сначала

bilerada: не на х!!!!!

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OBSERVATION OF A CRIME SCENE

ОСМОТР МЕСТА ПРОИСШЕСТВИЯ

What is a crime scene? The crime scene means the place or the area where the crime such as burglary, larceny, homicide or murder, traffic crime or motor vehicle theft, etc. takes place. The scene is the central location toward which all evidence points before, during and after the crime.

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