document.write( "Question 33957: what is the soultion to this simultaneous equation using substion or addtion method?
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document.write( "2x+3y=-5
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document.write( "3x-y=20 \n" );
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Algebra.Com's Answer #20336 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 1) 2x+3y=5 \n" ); document.write( "2) 3x-y=20 \n" ); document.write( "To eliminate the \"y\" variable, multiply the 2nd eqution by 3 \n" ); document.write( "and add the 2nd to the 1st, as follows: \n" ); document.write( "1)2x+3y=5 \n" ); document.write( "2)9x-3y=60 \n" ); document.write( "Adding get: \n" ); document.write( "11x=65 \n" ); document.write( " x= 65/11 \n" ); document.write( "Substitute that into the 1st or 2nd equation to solve for \"y\" \n" ); document.write( "Using 2nd get: 3(65/11)-y=20 \n" ); document.write( " y=195/11 - 20 \n" ); document.write( " y=195/11 - 220/11 \n" ); document.write( " y= -25/11 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |