Question 878695
Following the points along the perimeter, and identifying opposite equal sides, 2x=3y+5 and x=2y+2.


Choosing a preparation for substitution, 2x=4y+4.
{{{2x=3y+5=4y+4}}}
{{{highlight(1=y)}}}.
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{{{x=2y+2}}}
{{{x=2*1+2}}}
{{{highlight(x=4)}}}