document.write( "Question 412052: I am not understanding how to Solve the system of linear equation using matrices\r
\n" ); document.write( "\n" ); document.write( "x+y+z=3
\n" ); document.write( "2x -z=7
\n" ); document.write( " 5y+z=4\r
\n" ); document.write( "\n" ); document.write( "Can you guide me step by step in solving it? \n" ); document.write( "

Algebra.Com's Answer #289513 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "Note:  finding the value of a 3x3 matrix is done as follows:
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document.write( " = a1(b2c3-c2b3) - b1(a2c3-c2a3) + c1(a2b3-b2a3) 
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document.write( "x+y+z=3
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document.write( "2x -z=7
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document.write( "5y+z=4 \r
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document.write( "D =  = 13
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document.write( "    1*5 -1*2 +1*10 = 13
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document.write( " = 39\r
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document.write( " = 13\r
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document.write( " = -13\r
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document.write( "   x= 39/13 = 3  y = 13/13 = 1   z =-13/13 = -1 \n" );
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