document.write( "Question 840031: -x+2y=7
\n" ); document.write( "Y=-2x+1
\n" ); document.write( "How would I solve this? \n" ); document.write( "
Algebra.Com's Answer #506468 by hamsanash1981@gmail.com(151)\"\" \"About 
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-x + 2y = 7 --- 1
\n" ); document.write( "-2x -y = -1 ---2
\n" ); document.write( "Multiplying equ 2 by 2
\n" ); document.write( " -4x - 2y = -2 --- 3\r
\n" ); document.write( "\n" ); document.write( "Solving equation 1 and 3\r
\n" ); document.write( "\n" ); document.write( "-x + 2y = 7
\n" ); document.write( "-4x -2y = -2
\n" ); document.write( "=============
\n" ); document.write( "-5x = 5
\n" ); document.write( "x = -1
\n" ); document.write( "
\n" ); document.write( "Substituting value of x in equ 1\r
\n" ); document.write( "\n" ); document.write( "1 + 2y = 7
\n" ); document.write( "2y = 6
\n" ); document.write( "Y=3
\n" ); document.write( "Values of X= -1 and Y= 3\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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