Question

помогите пожалуста срочно пжжжжжжжжжж

Answer 1

Ответ:

$1,25$

Объяснение:

$(1\frac{1}{4}+5\frac{8}{9}:1\frac{17}{36})*\frac{5}{21}\\(\frac{5}{4}+\frac{53}{9}:\frac{53}{36})*\frac{5}{21}\\(\frac{5}{4}+\frac{53*36}{9*53})*\frac{5}{21}\\(\frac{5}{4}+4})*\frac{5}{21}\\(\frac{5}{4}+\frac{16}{4})*\frac{5}{21}\\\frac{5+16}{4}*\frac{5}{21}\\\frac{21}{4}*\frac{5}{21}\\\frac{21*5}{4*21}\\\frac{5}{4}=1\frac{1}{4}=1,25$