document.write( "Question 90829: Solve the system by addition.
\n" ); document.write( " 5x – 3y = 13
\n" ); document.write( " 4x – 3y = 11
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #66000 by malakumar_kos@yahoo.com(315) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( " Solve the system by addition.
\n" ); document.write( "5x – 3y = 13
\n" ); document.write( "4x – 3y = 11\r
\n" ); document.write( "\n" ); document.write( " 5x- 3y = 13.........(1)\r
\n" ); document.write( "\n" ); document.write( " 4x - 3y = 11........(2)\r
\n" ); document.write( "\n" ); document.write( " multiply (1) by -1 and add to (2)\r
\n" ); document.write( "\n" ); document.write( " -5x+3y = -13
\n" ); document.write( " 4x-3y = 11\r
\n" ); document.write( "\n" ); document.write( " -x = -2 (cancelling 3y &-3y)
\n" ); document.write( " x = 2 \r
\n" ); document.write( "\n" ); document.write( " substituting for x in (1) \r
\n" ); document.write( "\n" ); document.write( " 5*2 - 3y = 13
\n" ); document.write( " 10 - 3y =13
\n" ); document.write( " 10-13 = 3y
\n" ); document.write( " 3y = -3 or y =-1\r
\n" ); document.write( "\n" ); document.write( " The required solution is x = 2 and y = -1 \n" ); document.write( "

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