document.write( "Question 516063: I tried to solve a problem by the Elimination Method, but came up with the wrong answers. Please show me why. The following is the problem:\r
\n" ); document.write( "\n" ); document.write( "6x-3y=75 and
\n" ); document.write( "5x+7y=23\r
\n" ); document.write( "\n" ); document.write( "I came up with (22,19) however, the correct answers are (8,-9).
\n" ); document.write( "Thanks. \n" ); document.write( "

Algebra.Com's Answer #344230 by mananth(16949) $\"\"$ $\"About$

You can put this solution on YOUR website!
6 x -3 y = 75 .............1
\n" ); document.write( "5 x + 7 y = 23 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 7
\n" ); document.write( "Multiply (2) by 3
\n" ); document.write( "42 x -21 y = 525
\n" ); document.write( "15 x 21 y = 69
\n" ); document.write( "Add the two equations
\n" ); document.write( "57 x = 594
\n" ); document.write( "/ 57
\n" ); document.write( "x = 10.42 OR 198/19
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "6 x + -3 y = 75
\n" ); document.write( "62.53 + -3 y = 75
\n" ); document.write( " -3 y = 75 -62.53
\n" ); document.write( " -3 y = 12.47
\n" ); document.write( " y = -4.16 OR -25/6\r
\n" ); document.write( "\n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( "

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