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b) b + 1 200-580 = 2011 repede va rog dau coroana va


Răspuns :

b+1200-580=2011

b+1200=2011+580

b+1200=2591

b=2591-1200

b=1391

Răspuns:

b+1200-580=2011/+580

b+1200=2591/-1200

b=2591-1200

b= 1391