Question 274912
{{{3x+8y=4}}}
{{{12y+6x=-1}}} {{{x=(-1-12y)/6}}} {{{x=(-1/6)-2y}}}
plug x into the first equation
{{{3x+8y=4}}}
{{{3((-1/6)-2y)+8y=4}}}
{{{(-1/2)-6y+8y=4}}}
{{{(-1/2)+2y=4}}}
{{{2y=4+(1/2)}}}
{{{2y=8/2+(1/2)}}}
{{{2y=9/2}}}
{{{highlight(y=9/4)}}}
{{{3x+8y=4}}}
{{{3x+8(9/4)=4}}}
{{{3x+(18)=4}}}
{{{3x=-14}}}
{{{highlight(x=-14/3)}}}