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calculati (21/5 - 4/5) : (19/25 + 32/25)
Ajutati ma va rog e urgent !


Răspuns :

(21/5-4/5) : (19/25+32/25)
17/5 : 51/25. 
amplificam 17/5 cu 5
85 :51= 1,(6)
(21/5-4/5):(19/25+32/15)=17/5:51/25=17/5x25/51 =425/255