Question

calculați 7,(15)+2,(18)-15,23)+11,(20)​

Answer 1

$\frac{715 - 7}{99} + \frac{218 - 2}{99} - \frac{523 - 5 }{99} + \frac{1120 - 11}{99} =$

$\frac{715 - 7 + 218 - 2 - 523 - 5 + 1120 - 11}{99} =$

$\frac{1515}{99} =$

$\frac{505}{33}$