Question

Determinati opusul numarului rational a=$\frac{5}{8}$ - $\frac{5}{9}$ * 0.3

Answer 1

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