document.write( "Question 579088: I need help with system of equations, I have a question on my homework it is, \"A rectangle has a perimeter of 36 cm. Its width is 4 cm less than its length. Find the length and width of the rectangle.\"
\n" ); document.write( "I need to label the variables and create 2 equations, So far i have x=width y=length and 1 equation x=36-4.
\n" ); document.write( "I need help with the second equation. I hope this wasn't to long of a question. Thank you! \n" ); document.write( "
Algebra.Com's Answer #370857 by mananth(16946)\"\" \"About 
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length = x
\n" ); document.write( "width = y\r
\n" ); document.write( "\n" ); document.write( "y=x-4..............................(1)\r
\n" ); document.write( "\n" ); document.write( "perimeter = 2(L+W)\r
\n" ); document.write( "\n" ); document.write( "2(x+y)= 36..........................(2)\r
\n" ); document.write( "\n" ); document.write( "substitute y in this equation
\n" ); document.write( "2(x+x-4)=36
\n" ); document.write( "2(2x-4)=36
\n" ); document.write( "/2
\n" ); document.write( "2x-4 = 18
\n" ); document.write( "2x=18+4
\n" ); document.write( "2x=22
\n" ); document.write( "/2
\n" ); document.write( "x=11 cm the length
\n" ); document.write( "width = 11-4 = 7cm\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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