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Calculati : 0,2(3)+0,5(6)+0,7

Răspuns :

Răspuns:

=(23-2)/90+(56-5)/90+7/10

=21/90+51/90+⁹⁾7/10

=21/90+51/90+63/90

=(135/90)⁽⁵

=27/18

=1,5