\[7\frac4{13}-4\frac4{13}=3,\qquad 0.15=\frac3{20},\]
\[13\frac6{13}+11\frac7{13}=24+\frac{13}{13}=25.\]
Тогда
\[3:0.15-4:25=3:\frac3{20}-\frac4{25}=20-\frac4{25}=\frac{496}{25}=19\frac{21}{25}.\]
Ответ: \(19\frac{21}{25}\).