document.write( "Question 390474: Solve by elimination:
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document.write( " 0 =-15 + 2 x-y
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document.write( "0 =5 x + 5 y \n" );
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Algebra.Com's Answer #276856 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve by elimination: \n" ); document.write( "0 =-15 + 2 x-y \n" ); document.write( "0 =5 x + 5 y \n" ); document.write( "------------- \n" ); document.write( "Rearrange: \n" ); document.write( "2x - y = 15 \n" ); document.write( "5x + 5y = 0 \n" ); document.write( "-------------------- \n" ); document.write( "Modify: \n" ); document.write( "2x-y = 15 \n" ); document.write( "x +y = 0 \n" ); document.write( "---- \n" ); document.write( "Add and solve for \"x\": \n" ); document.write( "3x = 15 \n" ); document.write( "x = 5 \n" ); document.write( "---- \n" ); document.write( "Since x+y = 0, y = -5 \n" ); document.write( "======================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |