document.write( "Question 1076553: 40x+3y+9z=35
\n" ); document.write( "15x+16y+11z=50.5
\n" ); document.write( "11x+10y+300z=370 \r
\n" ); document.write( "\n" ); document.write( "Please help me to solve this, thank you! \n" ); document.write( "

Algebra.Com's Answer #691210 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
40x+3y+9z=35
\n" ); document.write( "15x+16y+11z=50.5
\n" ); document.write( "11x+10y+300z=370
\n" ); document.write( "---------------------
\n" ); document.write( "Inconvenient coefficiencts.
\n" ); document.write( "---
\n" ); document.write( "I would use determinants, or Cramer's rule.
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\n" ); document.write( "For the Det:
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document.write( "|40    3    9|\r\n" );
document.write( "|15   16   11|\r\n" );
document.write( "|11   10  300|\r\n" );
document.write( "

\n" ); document.write( "Det = 40*(16*300 - 10*11) - 3*(15*300 - 11*11) + 9*(15*10 - 11*16)
\n" ); document.write( "Det = 187600 - 13137 - 234
\n" ); document.write( "Det = 174229
\n" ); document.write( "=======================
\n" ); document.write( "Do you know how to do the rest?
\n" ); document.write( "You can check your answers using an online matrix solver.
\n" ); document.write( " \n" ); document.write( "

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