3x+7=x/2
\(3x+7=\frac{x}{2}\\ 2(3x+7)=2(\frac{x}{2})\\ 6x+14=x\\ 6x+14-x=x-x\\ 5x+14=0\\ 5x+14-14=0-14\\ 5x=-14\\ x=\frac{-14}{5}\\ x=-2\frac{4}{5}\\\)