document.write( "Question 1008713: Determine the solutions for the following systems of equations. Put your answers in ordered triple or quadruple form.\r
\n" ); document.write( "\n" ); document.write( "3x -4y + 6z = -7
\n" ); document.write( "-2x + y - 5z = -5
\n" ); document.write( "x + -y + z = -4\r
\n" ); document.write( "\n" ); document.write( "I solved the first one but I got huge answers and ugly fractions so I really need to know where I went wrong! I got (-59/29,-32/29,-218/29). These cannot be right!! Please help, thank you!\r
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\n" ); document.write( "\n" ); document.write( "The second one is \r
\n" ); document.write( "\n" ); document.write( "x + y - z + 2w = 5
\n" ); document.write( "-3x + 7y -5z +4w = 13
\n" ); document.write( "2x -3y +2z -w = -4
\n" ); document.write( "x -4y +3z -3w =-9\r
\n" ); document.write( "\n" ); document.write( "I didn't attempt this one because I got such a strange answer for the first one I didn't want to do the whole thing only to find I did it all wrong.\r
\n" ); document.write( "\n" ); document.write( "Thanks again, any help is appreciated.\r
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Algebra.Com's Answer #624292 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
No, you have a mistake somewhere.
\n" ); document.write( "Use Cramer's rule,
\n" ); document.write( "\"A=%28matrix%283%2C3%2C%0D%0A3%2C-4%2C6%2C%0D%0A-2%2C1%2C-5%2C%0D%0A1%2C-1%2C1%29%29\"
\n" ); document.write( "\"abs%28A%29=6\"
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\n" ); document.write( "\"A%5Bx%5D=%28matrix%283%2C3%2C%0D%0A-7%2C-4%2C6%2C%0D%0A-5%2C1%2C-5%2C%0D%0A-4%2C-1%2C1%29%29\"
\n" ); document.write( "\"abs%28A%5Bx%5D%29=-18\"
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\n" ); document.write( "\"A%5By%5D=%28matrix%283%2C3%2C%0D%0A3%2C-7%2C6%2C%0D%0A-2%2C-5%2C-5%2C%0D%0A1%2C-4%2C1%29%29\"
\n" ); document.write( "\"abs%28A%5By%5D%29=24\"
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\n" ); document.write( "\"A%5Bz%5D=%28matrix%283%2C3%2C%0D%0A3%2C-4%2C-7%2C%0D%0A-2%2C1%2C-5%2C%0D%0A1%2C-1%2C-4%29%29\"
\n" ); document.write( "\"abs%28A%5Bz%5D%29=18\"
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\n" ); document.write( "\"x=abs%28A%5Bx%5D%29%2Fabs%28A%29=%28-18%29%2F6=-3\"
\n" ); document.write( "\"y=abs%28A%5By%5D%29%2Fabs%28A%29=24%2F6=4\"
\n" ); document.write( "\"z=abs%28A%5Bz%5D%29%2Fabs%28A%29=18%2F6=3\"
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\n" ); document.write( "Do the 4x4 matrix the same way.
\n" ); document.write( "Repost if you get stuck.
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