Ответ:
\(\frac79-\frac{47}{72}=\frac{56-47}{72}=\frac18\).
\(\frac18:1{,}25+\frac7{40}=\frac18:\frac54+\frac7{40}=\frac1{10}+\frac7{40}=\frac{11}{40}\).
\(0{,}358-0{,}108=0{,}25=\frac14\), поэтому \(\frac{11}{40}:\frac14\cdot1{,}6=\frac{11}{10}\cdot\frac85=\frac{44}{25}\).
\(\frac{44}{25}-\frac{19}{25}=1\).
Ответ: \(1\).
