[tex]x+89=115=\ \textgreater \ x=115-89=\ \textgreater \ x=26 \\ \\ 2x+23=91=\ \textgreater \ 2x=91-23=\ \textgreater \ x=68:2=\ \textgreater \ x=34 \\ \\ 327-3x=63=\ \textgreater \ -3x=63-327=\ \textgreater \ -3x=-264(-1)=\ \textgreater \ \\ x=264:3=\ \textgreater \ x=88 \\ \\ x+2=47-36=\ \textgreater \ x=11-2=\ \textgreater \ x=9[/tex]
