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Calculati ( 2,5 - 0,25 -2)*10+1/2

Răspuns :

( 2,5 - 0,25 -2)*10+1/2

=0,25*10+1/2

=2,5+1/2-----2,5=25/10---simplificam prin 5=5/2

=5/2+1/2

=6/2

=3