Question

 frac{-28}{-54}*frac{45}{7} 
calculati va rog

Answer 1

$\frac{-28}{-54} * \frac{45}{7} = \frac{14}{27} * \frac{45}{7}= \frac{14*45}{27*7} = \frac{630}{189}$ -simplificam prin 3
$\frac{210}{63} -simplificam-prin -3= \frac{70}{21} -simpificam prin 7= \frac{10}{3}$