Question 323866
[A]={{{(matrix(3,3,3,-1,-3,2,-1,3,1,2,-4))}}}
[x]={{{(matrix(3,1,a,b,c))}}}
[b]={{{(matrix(3,1,14,5,3))}}}
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[A][x]=[b]
[x]=[A]inv[b]
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det[A]=-32
[A]inv={{{(1/(-32))*(matrix(3,3,-2,-10,-6,11,-9,-15,5,-7,-1))}}}
{{{(matrix(3,1,a,b,c))=highlight((matrix(3,1,3,-2,-1)))}}}