Question

Solve system by elimination
-16x-9y=20
8x+2y=0

Answer 1

`\left \{ {{-16x-9y=20} \atop 8x+2y=0\ \ } \right. \\\\ \left \{ {{-16x-9y=20} \atop {16x+4y=0}} \right. \\+------\\\\ -5y=20\ \ \ | divide\ by\ -5\\\\ y=-4\\\\ 16x=-4y\ \ \ | divide\ by\ 16\\\\ x=-(1)/(4)y=-(1)/(4)*(-4)=1`