document.write( "Question 1124892: One side of a triangle is one-third the longest side. The third side is 13 feet less than the longest side. The perimeter is 85. Find all three sides. \n" ); document.write( "

Algebra.Com's Answer #741234 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "One side of a triangle is one-third the longest side. The third side is 13 feet less than the longest side. The perimeter is 85. Find all three sides.
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Just ONE (1) variable is needed to solve for the value of all 3 sides
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document.write( "Let the first side be F
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document.write( "Then the longest side is 3F
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document.write( "Third side = 3F - 13
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document.write( "We then get: F + 3F + 3F - 13 = 85
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document.write( "7F - 13 = 85
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document.write( "7F = 98
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document.write( "F, or first side = 
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document.write( "Longest side: 
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document.write( "Third side:  \n" );
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