document.write( "Question 1054130: the perimeter of a triangle is 19cm. if the length of the longest side is twice that of the shortest side and 3 cm less than the sum of the lengths of the other two sides, find the lengths of the three sides \n" ); document.write( "
Algebra.Com's Answer #669637 by Fombitz(32388)\"\" \"About 
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\"A%2BB%2BC=19\"
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\n" ); document.write( "\"C=2A\"
\n" ); document.write( "So then,
\n" ); document.write( "\"A=C%2F2\"
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\n" ); document.write( "\"C=%28A%2BB%29-3\"
\n" ); document.write( "\"B=C-A%2B3\"
\n" ); document.write( "\"B=C-C%2F2%2B3\"
\n" ); document.write( "\"B=C%2F2%2B3\"
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\n" ); document.write( "Substituting into the first equation,
\n" ); document.write( "\"C%2F2%2BC%2F2%2B3%2BC=19\"
\n" ); document.write( "\"2C%2B3=19\"
\n" ); document.write( "\"2C=16\"
\n" ); document.write( "\"C=8\"
\n" ); document.write( "So then,
\n" ); document.write( "\"A=8%2F2\"
\n" ); document.write( "\"A=4\"
\n" ); document.write( "and
\n" ); document.write( "\"B=8%2F2%2B3\"
\n" ); document.write( "\"B=7\"
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