document.write( "Question 228736: What is 2x-y+z=14
\n" ); document.write( "-x+2y-4z=5
\n" ); document.write( " x+4y-6z=-1
\n" ); document.write( "This is solve the system using the elimination method get the x,y, and z please help this is hard.
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Algebra.Com's Answer #169791 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
2x - y + z = 14
\n" ); document.write( "-x+ 2y -4z = 5
\n" ); document.write( "x + 4y -6z =-1
\n" ); document.write( ":
\n" ); document.write( "You're right this is a pain!
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\n" ); document.write( "Add the 2nd and 3rd equations, to eliminate x
\n" ); document.write( "-x+ 2y -4z = 5
\n" ); document.write( "x + 4y -6z =-1
\n" ); document.write( "-----------------adding eliminates x
\n" ); document.write( "0 + 6y - 10z = 4
\n" ); document.write( "Simplify, divide by 2
\n" ); document.write( "3y - 5z = 2
\n" ); document.write( ":
\n" ); document.write( "Multiply the 2nd equation by 2 and add to the 1st equation
\n" ); document.write( "2x - y + z = 14
\n" ); document.write( "-2x+ 4y -8z = 10
\n" ); document.write( "-----------------addition eliminates x again
\n" ); document.write( "0 + 3y - 7z = 24
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\n" ); document.write( "Two 2 unknown equation to deal with now
\n" ); document.write( ":
\n" ); document.write( "Subtract 3y - 5z = 2 from the above equation
\n" ); document.write( "3y - 7z = 24
\n" ); document.write( "3y - 5z = 2
\n" ); document.write( "---------------subtraction eliminates y, find z
\n" ); document.write( "0 - 2z = 22
\n" ); document.write( "-2z = 22
\n" ); document.write( "z = \"22%2F%28-2%29\"
\n" ); document.write( "z = -11
\n" ); document.write( ":
\n" ); document.write( "find y using the equation 3y - 5z = 2
\n" ); document.write( "3y - 5(-11) = 2
\n" ); document.write( "3y + 55 = 2
\n" ); document.write( "3y = 2 - 55
\n" ); document.write( "3y = -53
\n" ); document.write( "y = \"53%2F3\"
\n" ); document.write( "y = -17.667
\n" ); document.write( ":
\n" ); document.write( "Find x using the 1st equation 2x - y + z = 14
\n" ); document.write( "2x - (-17\"2%2F3\") - 11 = 14
\n" ); document.write( "2x + 17\"2%2F3\" - 11 = 14
\n" ); document.write( "2x + 6\"2%2F3\" = 14
\n" ); document.write( "2x = 14 - 6.667; go to decimals here
\n" ); document.write( "2x = 7.333
\n" ); document.write( "x = 3.667
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\n" ); document.write( "It's kind of disgusting they give you a problem that doesn't have integer solutions.
\n" ); document.write( " I checked this using the matrix feature on my TI83, so I think it's right
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