document.write( "Question 550370: very unsure how to solve this or what numbers to plug into the equations there are so many combinations. If I had to guess I would guess \"No Solutions\"\r
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document.write( "Solve the system Write your answer using parentheses and no spaces. Example (2,0,-3) or write \"No Solution\" for questions with no solution.\r
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document.write( "x + y + z = 6
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document.write( "2x - y + 2z = 6
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document.write( "-x + y + 3z = 10 \n" );
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Algebra.Com's Answer #358670 by TutorDelphia(193)![]() ![]() You can put this solution on YOUR website! Solve using the elimination method rather than guessing: First elimination one variable, then another\r \n" ); document.write( "\n" ); document.write( "x + y + z = 6 \n" ); document.write( "plus \n" ); document.write( "-x + y + 3z = 10 \n" ); document.write( "2y+4z=16\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x - y + 2z = 6 \n" ); document.write( "plus 2 times \n" ); document.write( "-x + y + 3z = 10 \n" ); document.write( "-2x+2y+6z=20 \n" ); document.write( "which gives \n" ); document.write( "y+5z=26 \n" ); document.write( "We already had: \n" ); document.write( "2y+4z=16 \n" ); document.write( "multiply y+5z=26 by -2 \n" ); document.write( "-2y-10z=-52 \n" ); document.write( "-6z=-36 \n" ); document.write( "z=6\r \n" ); document.write( "\n" ); document.write( "Now that we know z=6 sub it in 2y+4z=16 \n" ); document.write( "2y+24=16 \n" ); document.write( "2y=-8 \n" ); document.write( "y=-4\r \n" ); document.write( "\n" ); document.write( "x + y + z = 6\r \n" ); document.write( "\n" ); document.write( "x+-4+6=6 \n" ); document.write( "x=4\r \n" ); document.write( "\n" ); document.write( "(4,-4,6) \n" ); document.write( " \n" ); document.write( " |