11TH•Mathematics•Matrices And Determinants•Question 3

Solution

Solve the following systems of linear equations by Cramer’s rule:

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Using Cramer’s rule for $AX=B$ (with $|A|\ne 0$ ):

x=\frac{|A_x|}{|A|},\qquad y=\frac{|A_y|}{|A|},\qquad z=\frac{|A_z|}{|A|}

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