Question

Срочно 11/15 * (4 1/2 - 3 2/5:17/20)+1 11/20=?

Answer 1

$ttdisplaystylefrac{11}{15}*(4frac{1}{2}-3frac{2}{5}:frac{17}{20})+1frac{11}{20}=1frac{11}{12}$

$1)3ttdisplaystylefrac{2}{5}:frac{17}{20}=frac{17}{5}:frac{17}{20}=frac{17}{5}*frac{20}{17}=frac{20}{5}=4$

$2)4ttdisplaystylefrac{1}{2}-4=frac{1}{2}$

$3) ttdisplaystylefrac{11}{15}*frac{1}{2}=frac{11}{30}$

$4)ttdisplaystylefrac{11}{30}+1frac{11}{20}=frac{22}{60}+1frac{33}{60}=1frac{55}{60}=1frac{11}{12}$