ax+by=k cx+dy=j corresponding matrix is a b   x =  k c d    y=  j Solve this matrix equation and show that the solutions will always have the form X= dk-bj/det(A) Y=ck-aj/det(B) Where A is the matrix of coefficients.  Use above formulas to solve 5x-4=12 -3x+8y=5

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A: A = -35-3   -4   ,   B = -3  4-355X-B = A

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Q: Please show all work and explain any concepts needed to solve the problem so I can understand

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A: The solution is given in the next steps.

Q: X1+ X2 + 2X3 — 5Х4 %3D 3 - 2X1 + 5X2 – X3 – 9X4 = -3 2X1+ X2 — Хз — 3Х4 %3D —11 X1 – 3X2 + 2X3 + 7X4…

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Q: Find the solutions x and y from the augmented matrix. Please show solving steps

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