document.write( "Question 243109: A rectangle´s length is 8 cm more than three times its width. If the perimeter is 128 cm, find
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document.write( "the length and width. \n" );
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Algebra.Com's Answer #178173 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! L=3W+8 \n" ); document.write( "2L+2W=128 \n" ); document.write( "2(3W+8)+2W=128 \n" ); document.write( "6W+16+2W=128 \n" ); document.write( "8W=128-16 \n" ); document.write( "8W=112 \n" ); document.write( "W=112/8 \n" ); document.write( "W=14 ANS. FOR THE WIDTH. \n" ); document.write( "L=3*14+8 \n" ); document.write( "L=42+8 \n" ); document.write( "L=50 ANS. FOR THE LENGTH. \n" ); document.write( "PROOF: \n" ); document.write( "2*50+2*14=128 \n" ); document.write( "100+28=128 \n" ); document.write( "128=128 \n" ); document.write( " \n" ); document.write( " |