Question 1099674

{{{(x+2)+(2x+5)+2(2x-1)=82}}}

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{{{x+2+2x+5+4x-2=82}}}

{{{7x=82-5}}}

{{{cross(7x=82+5)}}}

{{{7x=77}}}

{{{x=11}}}


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Side lengths:
<i>(removed)</i>
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{{{graph(300300,-3,7,-3,7,2x-1,x+2,2x+5)}}}