Question

956. Выполните действия: помогите дам 30 балов​

Answer 1

$\displaystyle (50,2:41\frac{5}{6}-18,04:50\frac{1}{9})*0,05+4,2=(\frac{251}{5}:\frac{251}{6}-\frac{451}{25}:\frac{451}{9})*\frac{1}{20}+\frac{21}{5}=\\\\(\frac{251}{5}*\frac{6}{251}-\frac{451}{25}*\frac{9}{451})*\frac{1}{20}+\frac{21}{5}=(\frac{1}{5}*6-\frac{1}{25}*9)*\frac{1}{20}+\frac{21}{5}=(\frac{6}{5}-\frac{9}{25})*\frac{1}{20}+\frac{21}{5}=\\\\\frac{21}{25}*\frac{1}{20}+\frac{21}{5}=\frac{21}{500}+\frac{21}{5}=\frac{2121}{500}=4\frac{121}{500}=4,242$