Question

Решите номер 2 пожалуйста

Answer 1

а)
$( frac{4}{7}- frac{1}{3} + frac{5}{6} )*42=frac{4}{7}* frac{42}{1} - frac{1}{3}* frac{42}{1} + frac{5}{6}* frac{42}{1}= 24-14+35=45$

б)
$2 frac{11}{15}*1 frac{1}{19}-1 frac{1}{19}*0,2=1 frac{1}{19}(2 frac{11}{15}-0,2) = frac{20}{19}( frac{41}{15}- frac{1}{5} ) =frac{20}{19}( frac{41}{15}- frac{3}{15})= \ \ =frac{20}{19}* frac{38}{15} = frac{8}{3}= 2 frac{2}{3}$