Question

решить систему$left { {{2y-(y-4) textless 6} atop {y textgreater 3(2y-1)+18}} right.$

Answer 1

$left{begin{matrix} 2y &- &(y-4) & textless &6 \ y & textgreater &3(2y-1) &+ &18 end{matrix}right.\\\ left{begin{matrix} 2y &- &y+4 & textless &6 \ y & textgreater &6y-3 &+ &18 end{matrix}right.\\\ left{begin{matrix} y & textless &2 \ -5y & textgreater &15 end{matrix}right.\\\ left{begin{matrix} y & textless &2 \ y & textless &3 end{matrix}right.\\ xin (-infty;3)$