Question

вычислить
1 8/11+2 2/19 * (1 4/5-2 3/4)

Answer 1

$1 frac{8}{11}+2 frac{2}{19}*(1 frac{4}{5}-2 frac{3}{4})=1 frac{8}{11}+2 frac{2}{19}*( frac{9}{5} - frac{11}{4} )= 1 frac{8}{11}+2 frac{2}{19}* frac{36-55}{20}=\\= 1 frac{8}{11}+2 frac{2}{19}* frac{-19}{20}=1 frac{8}{11}- frac{40}{19}* frac{19}{20}=1 frac{8}{11}- 2=- frac{3}{11}$