Question 342016
1.{{{x/3+6y=4}}} 
2.{{{y=-5-x}}}
Substitute eq. 2 directly into eq. 1,
{{{x/3+6(-5-x)=4}}}
{{{x/3-30-6x=4}}}
Multiply both sides by {{{3}}}.
{{{x-90-18x=12}}}
{{{-17x=102}}}
{{{highlight(x=-6)}}}
Now use eq. 2,
{{{y=-5-(-6))}}}
{{{y=-5+6}}}
{{{highlight(y=1)}}}