document.write( "Question 1006268: the perimeter of a rectangle is 56cm the length of the rectangle is 4 less than 3 times the width find the length the equation is 2(3w-4)+2(w)=56 the find the length 3w-4=______ cm \n" ); document.write( "
Algebra.Com's Answer #622450 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
the perimeter of rectangle is\r
\n" ); document.write( "\n" ); document.write( "\"P=2L%2B2W\"\r
\n" ); document.write( "\n" ); document.write( "so,\r
\n" ); document.write( "\n" ); document.write( "\"2L%2B2W=56cm\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "if the length of the rectangle is \"4\" less than \"3\" times the width, then we have\r
\n" ); document.write( "\n" ); document.write( "\"L=3W-4\"\r
\n" ); document.write( "\n" ); document.write( "\"2%283w-4cm%29%2B2%28w%29=56cm\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"6w-8cm%2B2w=56cm\"\r
\n" ); document.write( "\n" ); document.write( "\"8w=56cm%2B8cm\"\r
\n" ); document.write( "\n" ); document.write( "\"8w=64cm\"\r
\n" ); document.write( "\n" ); document.write( "\"w=64cm%2F8\"\r
\n" ); document.write( "\n" ); document.write( "\"w=8cm\"\r
\n" ); document.write( "\n" ); document.write( "then the length is\r
\n" ); document.write( "\n" ); document.write( "\"L=3%2A8cm-4cm\"\r
\n" ); document.write( "\n" ); document.write( "\"L=24cm-4cm\"\r
\n" ); document.write( "\n" ); document.write( "\"L=20cm+\"\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );