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Afla termenul necunoscut:
2/5+[2/5+(2/5-y)]-1/5=3/5

VA ROG SA MA AJUTATI !!!!!!                 DAU COROANA !!!!!!!!!!!!!!!!!!


Răspuns :

2/5+[2/5+(2/5-y)]=3/5+1/5
2/5+2/5-y=4/5-2/5
4/5-y=2/5
y=4/5-2./5
y=2/5