Выполни действия. 3ч8мин+11ч32мин= ;1мин30с-54с= ;2ч30с-49мин= ;30км811м÷11= ;26см×39+81см×47= ;62кг×93+18кг×70= ;86г×52+74г×39= ;37т392кг÷76= :
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