6. Simplify the expression \( \frac{24x^5y^3}{56x^7y} \).

Divide numerator and denominator by their common factors: \( \frac{24}{56} = \frac{3}{7} \), \( x^5 \) reduces to \( x^{-2} \), and \( y^3 \) reduces to \( y^2 \). The result is \( \frac{3y^2}{7x^2} \).