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Ответ дан
safarovaaliya

nomer2
300 кг=63кг
х=84кг
х=(200*84)÷63=400кг

Ответ

Ответ дан
kategween92

Номер 2

300 кг=63кг

х=84кг

х=(200*84)÷63=400кг

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