Respuesta :
[tex]9(2x+1) \ \textless \ 9x-18\\\\(9)(2x)+(9)(1) \ \textless \ 9x-18\\\\18x+9 \ \textless \ 9x-18\ \ \ |-9\\\\18x \ \textless \ 9x-27\ \ \ \ |-9x\\\\9x \ \textless \ -27\ \ \ \ |:9\\\\x \ \textless \ -3\\\\Answer:\ -4[/tex]