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Va rog ajutor. Calculati. 1,3(8)-2/3
Mulţumesc.


Răspuns :

[tex]1,3(8)- \frac{2}{3} = \frac{138-13}{90} - \frac{2}{3}= \frac{125}{90} - \frac{2}{3}\\ [/tex]

[tex]= \frac{25}{18} - \frac{2}{3} = \frac{25-12}{18} = \frac{13}{18} [/tex]