Question

How to solve 3x+5y=19
                   4x-2y=-18

Answer 1

`\left \{ {{3x+5y=19} \atop :2} \right. \\\\ \left \{ {{3x+5y=19} \atop 5} \right. \\\\ \left \{ {{3x+5y=19} \atop {10x-5y=-45}} \right. \\ ....................... \\ 13x \ \ / \ \ \ =-26 \\\\ \boxed{x= -(26)/(13)= -2} \\\\\\\ 2x-y=-9 \\\\ 2*(-2)-y=-9 \\\\ -4-y=-9 \\\\ -y=-9+4 \\\\ -y=-5 \\\\ \boxed{y=5}`