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Afla numarul necunoscut:
(7/12+9/12+8/12-2)+x=2/5+1+3/5
Va rog ajutatima


Răspuns :

(7/12+9/12+8/12-2)+x=2/5+1+3/5 (24/12-2)+x=5/5+1 (2-2)+x=1+1 x=2
7+9+8/12=24/12 simplificam cu 12 2/1+x=2/5+3/5+1 2+x=5/5+1 2+x=1+1 2+x=2 x=0 sper ca te am ajutat