Question 329974
[A]={{{(matrix(3,3,2,1,-1,6,5,-2,3,-1,1))}}}
[b]={{{(matrix(3,1,10,23,5))}}}
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det[A]={{{15}}}
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[A]inv={{{-(1/15)*(matrix(3,3,-3,0,-3,12,-5,2,21,-5,-4))}}}
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[x]=[A]inv[b]
[x]={{{(matrix(3,1,3,-1,-5))}}}
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{{{(matrix(3,1,x,y,z))}}}={{{(matrix(3,1,3,-1,-5))}}}