Question 1181752
{{{system(-6x-4y=10,3x+12y=15)}}}


Here easiest to multiply both sides of equation 2 by 2.
{{{system(-6x-4y=10,6x+24y=30)}}}
Add these equations.
{{{20y=40}}}
{{{highlight(y=2)}}}


Using original system again, multiply both sides of equation 1, by 3.
{{{system(-18x-12y=30,3x+12y=15)}}}
Add these equations.
{{{-15x=45}}}
{{{highlight(x=-3)}}}


Not the only way to use Elimination Method for the example.