Question 316438
1.{{{2x+6y=5}}}
2.{{{x-3y=8}}}
Multiply eq. 2 by 2 and add to eq. 1,
{{{2x+6y+2x-6y=5+16}}}
{{{4x=21}}}
{{{highlight( x=21/4)}}}
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Then use either equation to solve for y.
{{{2x+6y=5}}}
{{{4x+12y=10}}}
{{{21+12y=10}}}
{{{12y=-11}}}
{{{highlight(y=-11/12)}}}