document.write( "Question 122734: Please? I need help? Thank you.\r
\n" ); document.write( "\n" ); document.write( "solve by graphing: x - 2y = 8
\n" ); document.write( " x + y = - 1\r
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\n" ); document.write( "\n" ); document.write( "solve by substitution: 5x -3y = 13
\n" ); document.write( " 4x - 3y = 11
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Algebra.Com's Answer #90131 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
X-2Y=8
\n" ); document.write( "X+Y=-1 NOW SUBTRACT
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\n" ); document.write( "-3Y=9
\n" ); document.write( "Y=9/-3
\n" ); document.write( "Y=-3 ANSWER.
\n" ); document.write( "X+(-3)=-1
\n" ); document.write( "X-3=-1
\n" ); document.write( "X=-1+3
\n" ); document.write( "X=2 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "2-2*-3=8
\n" ); document.write( "2+6=8
\n" ); document.write( "8=8
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