document.write( "Question 84493: can you haelp me solve the system of equations. using the Gaussian elimination qith back substitution or gauss-jordan elimination\r
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document.write( "x+5y= 0
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document.write( "x+6y+z=1
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document.write( "-2x-y-z=-41\r
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document.write( "can you break it down to me on how to solve problems of this type \n" );
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Algebra.Com's Answer #61006 by vertciel(183)![]() ![]() ![]() You can put this solution on YOUR website! Hello,\r \n" ); document.write( "\n" ); document.write( "This is a system of three equations. You have to eliminate for only each term, and then you use this term to help you solve the others.\r \n" ); document.write( "\n" ); document.write( "x + 5y = 0 ----------(1) \n" ); document.write( "x + 6y + z = 1 ------(2) \n" ); document.write( "-2x - y - z = -41 ---(3)\r \n" ); document.write( "\n" ); document.write( "(2) + (3): -x + 5y = -40 ---(4) <-- I am doing this so I can get rid of the z for the time being.\r \n" ); document.write( "\n" ); document.write( "(4) + (1): 10y = -40\r \n" ); document.write( "\n" ); document.write( " y = -4\r \n" ); document.write( "\n" ); document.write( "Since you know that x + 5y = 0, x = -5y.\r \n" ); document.write( "\n" ); document.write( "Therefore, x = -5(-4)\r \n" ); document.write( "\n" ); document.write( "x = 20\r \n" ); document.write( "\n" ); document.write( "I'll leave it to you to find z. Please write back for more help if needed. \n" ); document.write( " |