\[\frac{24x^{2} - 3y}{4x} - 6x^{\backslash 4x} =\]
\[= \frac{24x^{2} - 3y - 24x^{2}}{4x} = - \frac{3y}{4x}\ \]
\[при\ x = 1,5;y = 2,4:\]
\[- \frac{3y}{4x} = - \frac{3 \cdot 2,4}{4 \cdot 1,5} = - \frac{0,6}{0,5} = - \frac{6}{5} = - 1,2.\]