document.write( "Question 517042: A square animal pen and a pen shaped like an equilateral triangle have equal perimeters. find the length of the sides of each pen if the sides of the triangle pen are 8 less than twice the side of the square pen \n" ); document.write( "
Algebra.Com's Answer #344620 by mananth(16946)\"\" \"About 
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length of side of square =x
\n" ); document.write( "length of side of triangle = 2x-8\r
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\n" ); document.write( "perimeter of squale = 4L
\n" ); document.write( "perimeter of equilateral triangle = 3a
\n" ); document.write( "4L=3a\r
\n" ); document.write( "\n" ); document.write( "4x=3(2x-8)
\n" ); document.write( "4x=6x-24
\n" ); document.write( "-2x=-24
\n" ); document.write( "/-2
\n" ); document.write( "x=12 the side of square\r
\n" ); document.write( "\n" ); document.write( "side of triangle = 2x-8 => 2*12-8=>16\r
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