document.write( "Question 810536: i need help with row operations the problem is 4y=2x+4
\n" ); document.write( " -x=-2-y \n" ); document.write( "
Algebra.Com's Answer #488220 by richwmiller(17219)\"\" \"About 
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-x=-2-y
\n" ); document.write( "x=2+y
\n" ); document.write( "2x-4y=-4
\n" ); document.write( "2*(2+y)-4y=-4
\n" ); document.write( "4+2y-4y=-4
\n" ); document.write( "-2y=-8
\n" ); document.write( "y=4
\n" ); document.write( "x=2+4
\n" ); document.write( "x=6\r
\n" ); document.write( "\n" ); document.write( "x = 6, y = 4\r
\n" ); document.write( "\n" ); document.write( "x-y=2
\n" ); document.write( "2x-4y=-4
\n" ); document.write( "multiply by2
\n" ); document.write( "2x-2y=4
\n" ); document.write( "subtract
\n" ); document.write( "-4y+2y=8
\n" ); document.write( "2y=8
\n" ); document.write( "y=4 etc\r
\n" ); document.write( "\n" ); document.write( "1 -1 2
\n" ); document.write( "2 -4 -4
\n" ); document.write( "2 -2 -4
\n" ); document.write( "0 2 8
\n" ); document.write( "0 1 4
\n" ); document.write( "1 -1 2
\n" ); document.write( "1 0 6
\n" ); document.write( "0 1 4\r
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