16кг560г:(20кг560г-19кг640г)=
(6ц5кг-78кг)•300+4т3кг=
4ч5мин•2+6ч15мин•2=
2км308м•20-6км90м:3=
Только ответ ПОЖАЛУЙСТА!
Мне срочно нужно
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