# SOLUTION: I am not understanding how to Solve the system of linear equation using matrices. x+y=3 4y=12 7x+3y-4z=5 Can you guide me step by step in solving it?

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> SOLUTION: I am not understanding how to Solve the system of linear equation using matrices. x+y=3 4y=12 7x+3y-4z=5 Can you guide me step by step in solving it?      Log On

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 Question 412025: I am not understanding how to Solve the system of linear equation using matrices. x+y=3 4y=12 7x+3y-4z=5 Can you guide me step by step in solving it?Answer by ewatrrr(10682)   (Show Source): You can put this solution on YOUR website! ``` Hi x+y=3 4y=12 7x+3y-4z=5 D = = -16 D[x]= = 0 D[y]= = -48 D[z] = = -16 x = 0 and y = -48/-16 = 3 and z = -16/-16 = 1 ```