Question 395667
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Hi
3x-7y = +1
2x-3y = -1
D ={{{(matrix(2,2,3,-7,2,-3))}}} = 5
D[x]={{{(matrix(2,2,1,-7,-1,-3))}}} = -10   x = -10/5 = -2
D[y]={{{(matrix(2,2,3,1,2,-1))}}} = -5      y = -5/5 = -1
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