Question

2 целых 2/5- (1/4 +7/10

Answer 1

$2 frac{2}{5}-( frac{1}{4} + frac{7}{10} ) = frac{48}{20} -( frac{5}{20}+ frac{14}{20} )= frac{48}{20} - frac{19}{20} = frac{29}{20} =1 frac{9}{20}$