document.write( "Question 473862: solving systems of equations\r
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document.write( "solve the system of equation\r
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document.write( "{ x+y=7
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document.write( " x-y=13\r
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document.write( "i know the answer is (10, -3)\r
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document.write( "my question is how? can someone show me a step by step on how to do this? \n" );
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Algebra.Com's Answer #325001 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! x+y=7 \n" ); document.write( "x-y=13 \n" ); document.write( "--------- Add \n" ); document.write( "2x = 20 \n" ); document.write( "x = 10 \n" ); document.write( "------ \n" ); document.write( "y = -3 \n" ); document.write( " \n" ); document.write( " |