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Calculati:
(6/9 + 15/10 + 75/90) :3


Răspuns :

(6x10/90+15x9/90+75/90):3=
60+135+75/90:3=
270/90:3=3:3=1
([tex] \frac{6}{9} + \frac{15}{10} + \frac{75}{90} ):3[/tex]=

=([tex] \frac{2}{3} + \frac{3}{2} + \frac{5}{6} ):3[/tex]=

=([tex] \frac{4}{6} + \frac{9}{6} + \frac{5}{6} ):3[/tex]=

=[tex] \frac{18}{6} [/tex]:3=

=3:3=1