16,5-(t+3,4)=4,9

r+16.23-15,8=7,1

информация о достопримечательностях лондона букингемский дворец Напишите пожалуйста мне на завтра надо очень срочно

С аэродрома вылетели 2 самолёта.Через 3 часа расстояние между ними было 30630 км.Один из них летел со скоростью 640км/час.С ккой скоростью летел другой смолёт ?

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