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[(b-8000):50+900]:250=4


Răspuns :

[(b-8000):50+900]:250=4
(b-8000):50+900=4·250
(b-8000):50+900=1000
(b-8000):50=1000-900
(b-8000):50=100
b-8000=50·100
b-8000=5000
b=8000+5000=> b=13000