[m]\left\{\begin {matrix}\frac{3}{7}y ≤-10\\2y ≤ \frac{10}{3}\end {matrix}\right.[/m]
[m]\left\{\begin {matrix}y ≤-10\cdot {7}{3}\\y ≤ \frac{10}{6}\end {matrix}\right.[/m] ⇒ [m]y ≤-\frac{70}{3}[/m]
Наибольшее целое
-24
[m]-24=-\frac{72}{3} <-\frac{70}{3}[/m]