document.write( "Question 147780: the soloution of the system of equations below\r
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document.write( "y=5-3x
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document.write( "4x-5y=13\r
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document.write( "how do i solve for x and y \n" );
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Algebra.Com's Answer #108158 by stanbon(75887) ![]() You can put this solution on YOUR website! y=5-3x \n" ); document.write( "4x-5y=13 \n" ); document.write( "----------- \n" ); document.write( "Rearrange: \n" ); document.write( "3x + y = 5 \n" ); document.write( "4x -5y = 13 \n" ); document.write( "------------- \n" ); document.write( "Again: \n" ); document.write( "15x + 5y = 25 \n" ); document.write( "4x - 5y = 13 \n" ); document.write( "-------------- \n" ); document.write( "Add the two equations to get: \n" ); document.write( "19x = 38 \n" ); document.write( "x = 2 \n" ); document.write( "-------- \n" ); document.write( "Substitute into y = 5-3x to solve for \"y\": \n" ); document.write( "y = 5-3*2 = -1 \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |