How to get lowest value from table Languages

How to get lowest value from table

Problem 1How can I get lowest value from table (not null), for ID_CAR? For example, for ID_CAR 1 lowest value is 50, for ID_CAR 2 lowest value is 50 and for ID_CAR 3 lowest value is 300. I don't need duplicates, I need only one value for one car.
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