x=-10-y\\xy=21\end{cases}\\\\y(-10-y)=21\\y^2+10y+21=0\\y_1=-3\ y_2=-7\\x_1=-7\ x_2=-3" alt="\begin{cases}x+y=-10=>x=-10-y\\xy=21\end{cases}\\\\y(-10-y)=21\\y^2+10y+21=0\\y_1=-3\ y_2=-7\\x_1=-7\ x_2=-3" align="absmiddle" class="latex-formula">
Числа -3 и -7 ,меньшее -7