Решите уравнение: (7y-3)/4-(4y-5)/3=-3/4.

\[\frac{7y - 3}{4} - \frac{4y - 5}{3} = - \frac{3}{4}\ \ | \cdot 12\]

\[3(7y - 3) - 4(4y - 5) = - 3 \cdot 3\]

\[21y - 9 - 16y + 20 = - 9\]

\[5y = - 9 - 11\]

\[5y = - 20\]

\[y = - 4.\]

\[Ответ:y = - 4.\]