Question

2 - ( 49 / 45 - 7 / 15 ) : 14 / 20

Dau coroana

Answer 1

$2 - ( \frac{49}{45} - \frac{7}{15} ) \div \frac{14}{20 } =$
$= \frac{2}{1} - \frac{28}{45} \div \frac{14}{20} =$
$= \frac{2}{1} - \frac{28}{45} \times \frac{20}{14} =$
$= \frac{2}{1} - \frac{2}{9} \times \frac{4}{1} =$
$= \frac{2}{1} - \frac{8}{9} =$
$= \frac{18 - 8}{9}$
=10/9