document.write( "Question 863842: Please help me solve this equation\r
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document.write( "Use the echelon method to solve this system of two equations in two unknowns \r
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document.write( "x/2 + y = 3/2
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document.write( "x/3 + y = 1/3 \n" );
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Algebra.Com's Answer #520644 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! x/2 + y = 3/2 \n" ); document.write( "x/3 + y = 1/3 \n" ); document.write( "subtract second equation from first \n" ); document.write( "x/6 = 7/6 \n" ); document.write( "multiply both sides of = by 6 \n" ); document.write( "x = 7 \n" ); document.write( "substitute for x in first equation \n" ); document.write( "7/2 + y = 3/2 \n" ); document.write( "y = -4/2 = -2 \n" ); document.write( "solution is x = 7, y = -2 \n" ); document.write( "check answer by substituting in second equation \n" ); document.write( "7/3 -2 = 1/3 \n" ); document.write( "1/3 = 1/3 \n" ); document.write( "our answer checks :-) \n" ); document.write( " \n" ); document.write( " |