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Calculati: (1/2-3/4)-(5/2-5/4) - (3/2-3/4)

Răspuns :

(2·1/2-3/4)-(2·5/2-5/4)-(2·3/2-3/4)=
(2/4-3/4)-(10/4-5/4)-(6/4-3/4)=
-1/4-5/4-3/4=-9/4
Sper ca te am ajutat!