[tex]\displaystyle \frac{x}{2}+3=4-2x\\\\\frac{x}{2}+2x=4-3\\\\\frac{x}{2}+2x=1\\\\\frac{x+4x}{2}=1\\\\\frac{5x}{2}=1\\\\5x=1\cdot 2\\5x=2\\\\x=\frac{2}{5}=0,4[/tex]
