[tex]\left \{ {{5x-3y=-1/*2} \atop {-2x+2y=5}/*3} \right.\\\left \{ {{10x-6y=-2} \atop {-6x+6y=15}} \right. \\4x=13\\x=3.25[/tex]
[tex]5x-3y=-1\\5*3.25-3y=-1\\16.25-3y=-1/-16.25\\-3y=-17.25\\y=5.75[/tex]
