Question

qual é o resultado completo dessa operação?

Answer 1

A) $(\frac{3}{2} - \frac{2}{5} ) + ( \frac{5}{4} - \frac{2}{3})$
  
    $(\frac{15-4}{10} ) + ( \frac{15-8}{12})$
  
    $(\frac{11}{10} ) + ( \frac{7}{12})$
 
  $(\frac{66+35}{60} ) = \frac{101}{60}$


B) $(\frac{7}{8} - \frac{5}{6}) + ( \frac{8}{9}- \frac{7}{9} )$
    
    $(\frac{21-20}{24} ) + ( \frac{1}{9} )$
 
   $(\frac{1}{24} ) + ( \frac{1}{9} )$
   
   $(\frac{3+8}{72} ) = \frac{11}{72}$