Предмет: Математика, автор: Lin2016

помогите пожалуйста .!!!!!!!!!!!!!!!!!!!!!!!!!

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Ответы

Автор ответа: kirikl71

Всё сделал, если у тебя есть вопросы, спрашивай)
На всё отвечу!!))

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Автор ответа: Диана20052011

1.уравнение
x-709=278
x=709+278
x=987
--------------------
987-709=278

2.Вычисление в столбик
700003 86400:8=10800
- 433705 598302+271908=870210
--------------- 99715:5=19943
2415×93=224595
4509×7=31563
266298

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