Question 314629
1.{{{5x-y=26}}}

2.{{{x+2y=25}}}
Multiply eq. 1 by 2 and add to eq. 2,
{{{10x-2y+x+2y=52+25}}}
{{{11x=77}}}
{{{highlight(x=7)}}}
Then from eq. 1,
{{{5x-y=26}}}
{{{35-y=26}}}
{{{highlight(y=9)}}}
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.
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{{{drawing(300,300,-2,12,-2,12,grid(1),circle(7,9,.3),graph(300,300,-2,12,-2,12,5x-26,(25-x)/2))}}}