document.write( "Question 1052410: the perimeter of a triangle is 19 cm. if the length of the longest side is twice that of the shortest side and 3cm less than the sum of the lengths of the other two sides, find the length of the three sides \n" ); document.write( "
Algebra.Com's Answer #667851 by Fombitz(32388)\"\" \"About 
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\"perimeter of a triangle is 19 cm\"
\n" ); document.write( "\"A%2BB%2BC=19\"
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\n" ); document.write( "\"longest side is twice that of the shortest side\"
\n" ); document.write( "\"C=2A\"
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\n" ); document.write( "\"longest side is 3cm less than the sum of the lengths of the other two sides,
\n" ); document.write( "\"C=%28A%2BB%29-3\"
\n" ); document.write( "\"A%2BB=C%2B3\"
\n" ); document.write( "Substitute into the first equation,
\n" ); document.write( "\"%28C%2B3%29%2BC=19\"
\n" ); document.write( "\"2C=16\"
\n" ); document.write( "\"C=8\" \"cm\"
\n" ); document.write( "So then from the second,
\n" ); document.write( "\"8=2A\"
\n" ); document.write( "\"A=4\"\"cm\"
\n" ); document.write( "and from the first,
\n" ); document.write( "\"4%2BB%2B8=19\"
\n" ); document.write( "\"B=7\"\"cm\"\r
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