<PRE><B>Question 80198</B>
2X-3Y-2Z=12
X+4Y+Z=-9
4X+2Y-3Z=6
 Question: Solve using linear combination and by matrices. Write the matrices you typed into calculator and the operations it took to solve the system
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A is a 3x3 matrix whose rows are the coefficients of xyz from the 3 equations.
B is a 3x1 matrix whose rows are the constants from the 3 equations.
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Solution is [A]^-1[B]
x=1; y=-2; z=-2
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Cheers,
Stan H.</PRE>