Предмет: Математика, автор: настя2139

неизвестное число-145-683=103, 765-неизвестное число-121=144, 406+ неизвестное число+278=895

Ответы

Автор ответа: zaleksandra

1.х-145-683=103
х=103+145+683=931
2.765-х-121=144
х=765-121-144=500
3.406+х+278=895
х=895-278-406=211

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