document.write( "Question 532972: Solve the system using the addition method. If there is no solution or if there are many solutions and the system's equations are dependent, so state. The three equations are:\r
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document.write( "6x-y+3z+22
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document.write( "x+3y-z=-4
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document.write( "3x+3y-4z=-9\r
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document.write( "I am having to do my homework on course compass (AKA mathlab) and only get 3 chances to enter in my answer before it giving me a new problem. This is what I have done so far to get an answer and it telling me my answer is wrong.\r
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document.write( "I took equation 1 and 3 and eliminated X and got another equation which is now equation 4. I then took equation 2 and 3 and eliminated X and got my 5th equation. I then added equation 4 and 5 and eliminated Z which gave my my Y answer. I then plugged my Y answer in to equation 5 and got my Z. I then took my Y and Z answers and plugged them into equation 1 to get my X. Somewhere in the mess of it all, I got the wrong answers. Can you help me?\r
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document.write( "Thanks,\r
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document.write( "Lexi \n" );
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Algebra.Com's Answer #350939 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! 4___ -7y + 11z = 40\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5___ -6y - z = 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-73y = 73 ___ y = -1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-6(-1) - z = 3 ___ z = 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + 3(-1) - (3) = -4 ___ x = 2 \n" ); document.write( " |