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Determinati opusul numarului rational a=[tex] \frac{5}{8}[/tex] - [tex] \frac{5}{9} [/tex] * 0.3

Răspuns :

[tex]\frac{5}{8} - \frac{5}{9} * 0,3=\frac{5}{8}-\frac{5}{9}*\frac{3}{10}=\frac{5}{8}-\frac{1}{6}=\frac{5*3-4}{24}=\frac{11}{24}[/tex]
 
0pusul este  
[tex]-\frac{11}{24}[/tex]