Question 370357
1.{{{3x + y = 26}}}
2.{{{-6x + y = -37}}}
From eq. 1,
{{{y=-3x+26}}}
Substitute into eq. 2,
{{{-6x+(-3x+26)=-37}}}
{{{-9x+26=-37}}}
{{{-9x=-63}}}
{{{highlight(x=7)}}}
Then from eq. 1,
{{{y=-3(7)+26}}}
{{{y=-21+26}}}
{{{highlight(y=5)}}}
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{{{3x + y = 26}}}
{{{y=-3x+26}}}
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{{{drawing(300,300,-2,10,-2,10,grid(1),graph(300,300,-2,10,-2,10,0,-3x+26))}}}
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{{{-6x + y = -37}}}
{{{y=6x-37}}}
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{{{drawing(300,300,-2,10,-2,10,grid(1),circle(7,5,0.3),graph(300,300,-2,10,-2,10,0,-3x+26,6x-37))}}}
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