document.write( "Question 235532: 5X-7Y=1
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document.write( "2X+5Y=16\r
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document.write( "could you show the work as well please so i can learn how to do it? \n" );
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Algebra.Com's Answer #173481 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 5X-7Y=1 \n" ); document.write( "2X+5Y=16 \n" ); document.write( "-------- \n" ); document.write( "There's more than one way to do these. \n" ); document.write( "I'll use elimination and substitution \n" ); document.write( "------ \n" ); document.write( "5X-7Y=1 \n" ); document.write( "2X+5Y=16 \n" ); document.write( "Multiply each eqn to get the same coefficient for x or y: \n" ); document.write( "10x-14y = 2 Eqn 1 times 2 \n" ); document.write( "10x+25y = 80 Eqn 2 times 5 \n" ); document.write( "------------- subtract \n" ); document.write( "0x - 39y = -78 \n" ); document.write( "y = 2 \n" ); document.write( "------ \n" ); document.write( "Then sub for y into either eqn \n" ); document.write( "2X+5Y=16 \n" ); document.write( "2x + 10 = 16 \n" ); document.write( "2x = 6 \n" ); document.write( "x = 3 \n" ); document.write( " \n" ); document.write( " |