Раскрой скобки и приведи подобные слагаемые:

-0,5(6n-4m)+2 (3,5n-m)−0,5(6n−4m)+2(3,5n−m) .

Выбери верный вариант.

-4n−4n

4n4n

-4n+4m−4n+4m

4n-4m4n−4m
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