document.write( "Question 1055948: A triangular support beam of the roof of a large warehouse has a perimeter of 72 meters. The first side is one-third of the second side. The third side is 19 meters shorter than the second side. What are the lengths of the three sides of the triangular support beam? \n" ); document.write( "

Algebra.Com's Answer #671087 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "A triangular support beam of the roof of a large warehouse has a perimeter of 72 meters. The first side is one-third of the second side.
\n" ); document.write( "The third side is 19 meters shorter than the second side. What are the lengths of the three sides of the triangular support beam?
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document.write( "Let x be length of the first side.\r\n" );
document.write( "Then  the length of the second size is 3x,\r\n" );
document.write( "and   the length of the third side is 3x - 19.\r\n" );
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document.write( "The equation for the perimeter is\r\n" );
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document.write( "x + 3x + (3x-19) = 72.\r\n" );
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document.write( "7x = 72 + 19 = 91.\r\n" );
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document.write( "x =  = 13.\r\n" );
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document.write( "From this point you can complete the solution on your own.\r\n" );
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