document.write( "Question 661495: the length of a rectangle is 3 less than twice the width the perimeter is 30cm what is the length and width?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #411639 by ReadingBoosters(3246)![]() ![]() ![]() You can put this solution on YOUR website! p = 2(l+w) = 2l+2w = 30 \n" ); document.write( "l = 2w - 3 \n" ); document.write( "Substitute l into the perimeter equation \n" ); document.write( "2(2w-3)+2w = 30 \n" ); document.write( "Distribute the 2 \n" ); document.write( "4w - 6 + 2w = 30 \n" ); document.write( "Combine like terms \n" ); document.write( "6w = 30 + 6 \n" ); document.write( "6w=36 \n" ); document.write( "6w/6 = 36/6 \n" ); document.write( "w = 6 \n" ); document.write( "l = 2(6) - = 9 \n" ); document.write( " |