[tex]\displaystyle \left \{ {{3y+2x=8} \atop {2x-5y=0}} \right.\\ \\\left \{ {{2x=8-3y} \atop {2x-5y=0}} \right. \\8-3y-5y=0\\y=1\\2x-5*1=0\\\\x=\frac{5}{2}=2,5\\\\ (x,y)=(2,5;1)[/tex]