document.write( "Question 484926: x+2y-2z=1
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document.write( "7x-4y+z=11
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document.write( "2x-3y+2z=5 \n" );
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Algebra.Com's Answer #331731 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Hint: Solve equation 2 for z. After that, perform the substitution for equations 1 and 3 that will eliminate z. From there, you'll have 2 equations with 2 unknowns. Solve this system as you normally would and then use those answers to find z. \n" ); document.write( " |