Решение:
\[ 74 - 26 = 48 \]
\[ \frac{48}{25} : \frac{48}{(-5)} \cdot \frac{15}{4} \]
\[ \frac{48}{25} \cdot \frac{(-5)}{48} \]
\[ \frac{1}{25} \cdot \frac{(-5)}{1} = -\frac{5}{25} \]
\[ -\frac{5 \div 5}{25 \div 5} = -\frac{1}{5} \]
\[ -\frac{1}{5} \cdot \frac{15}{4} \]
\[ -\frac{1 \cdot 15}{5 \cdot 4} = -\frac{15}{20} \]
\[ -\frac{15 \div 5}{20 \div 5} = -\frac{3}{4} \]
Ответ: -3/4