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cum se rezolva 0,5-1 supra 2 imultit (3 supra 4-0,25)


Răspuns :

5/10 - 1/2 x (3/4-25/100) = 1/2 - 1/2 x (3/4 - 1/4) = 1/2 - 1/2 x 1/2 = 1/2 - 1/4 = 1/4