Question

Спасите срочнооооо!!!

Answer 1

$\displaystyle \tt -(\frac{489}{50}-\frac{49}{9})-(\frac{11}{50}-\frac{23}{9})=-\frac{1951}{450}-(-\frac{1051}{450})=-\frac{1951}{450}+\frac{1051}{450}=-2$