document.write( "Question 80779: Solve the system by graphing.\r
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document.write( "x – 2y = 8
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document.write( "x + y = -1\r
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Algebra.Com's Answer #57950 by daniellagirl89(3)![]() ![]() ![]() You can put this solution on YOUR website! x – 2y = 8 \n" ); document.write( "x + y = -1\r \n" ); document.write( "\n" ); document.write( "Multiply the second equation by 2 to get both y's opposite of eachother \n" ); document.write( "2(x + y) = -1(2) \n" ); document.write( "2x + 2y = -2\r \n" ); document.write( "\n" ); document.write( "Now plug in your first equation \n" ); document.write( "x - 2y = 8 \n" ); document.write( "2x + 2y = -2\r \n" ); document.write( "\n" ); document.write( "3x = 6 \n" ); document.write( "x = 2 \n" ); document.write( " |