Question 329663
[A]={{{(matrix(3,3,4,3,-5,3,-7,-1,2,5,2))}}}
[x]={{{(matrix(3,1,x,y,z))}}}
[b]={{{(matrix(3,1,-29,-19,-10))}}}
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[A][x]=[b]
[x]=[A]inv[b]
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det[A]={{{-205}}}
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[A]inv={{{(1/205)*(matrix(3,3,-9,-31,-38,-8,18,-11,29,-14,-37))}}}
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[x]=[A]inv[b]={{{(matrix(3,1,-6,0,1))}}}
{{{(matrix(3,1,x,y,z))=(matrix(3,1,-6,0,1))}}}