[latex]4x-7=2x+15\ \ \ \ /+7\\\\4x-7+7=2x+15+7\\\\4x=2x+22\ \ \ \ /-2x\\\\4x-2x=2x-2x+22\\\\2x=22\ \ \ \ /:2\\\\2x:2=22:2\\\\\underline{\underline{x=11}}[/latex]

4x-7=2x+15 4x-2x=15+7 2x=22 x=11