Question 980859
{{{system(6x-3y=-1,2x+5y=1)}}}


{{{system(6x-3y=-1,6x+15y=3)}}}


{{{6x+15y-6x-(-3y)=3-(-1)}}}
{{{15y+3y=4}}}
{{{18y=4}}}
{{{y=4/18=2/9}}}


Find x using y.
{{{6x=-1+3y}}}
{{{x=-1/6+3y/6}}}
{{{x=-1/6+y/2}}}
{{{x=(2/9)/2-1}}}
{{{x=1/9-9/9}}}
{{{x=-8/9}}}