Question

вычислите:
3 1/9-(3,5+2 1/9)
1 5/14-(1 2/7-2 9/14)

Answer 1

$1)3frac{1}{9} -(3.5+2 frac{1}{9} )=3 frac{1}{9} -3.5 - 2frac{1}{9} = frac{9}{9} -3.5=1-3.5=-2.5$
$2)1 frac{5}{14} -( 1frac{2}{7} - 2frac{9}{14} )=1 frac{5}{14}-1 frac{2}{7}+2 frac{9}{14}= frac{19}{14} - frac{18}{14} + frac{37}{14} = frac{38}{14} = frac{19}{7}=2 frac{5}{7}$