document.write( "Question 549951: The lengths of the sides of a triangle are 3x, 5x – 12, and x + 20. Find the value of x so that the triangle is isosceles. \n" ); document.write( "
Algebra.Com's Answer #358238 by mananth(16946)\"\" \"About 
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Any two side are equal in isoscles triangle\r
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\n" ); document.write( "\n" ); document.write( "5x-12=x+20\r
\n" ); document.write( "\n" ); document.write( "4x=32
\n" ); document.write( "x=8\r
\n" ); document.write( "\n" ); document.write( "5x-12=28
\n" ); document.write( "x+20=28\r
\n" ); document.write( "\n" ); document.write( "5x=40\r
\n" ); document.write( "\n" ); document.write( "28,28,40
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