Question 305446
1.{{{2x+3y=17}}}
2.{{{-x-4y=-21}}}
Multiply eq. 2 by 2 and add to eq. 1,
{{{2x+3y-2x-8y=17-42}}}
{{{-5y=-25}}}
{{{highlight(y=5)}}}
Then use either equation to solve for x.
{{{-x-4y=-21}}}
{{{-x-20=-21}}}
{{{-x=-1}}}
{{{highlight(x=1)}}}
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(1,5)
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 {{{ drawing( 300, 300, -2, 8, -2, 8, grid(1),circle(1,5,.2), graph( 300, 300, -2, 8, -2, 8, (17-2x)/3, (-21+x)/(-4))) }}}