# SOLUTION: Help please?! SOLVE THE SYSTEM: 2/x+3/y-2/z=-1 3/x-18/y+5/z=4 5/x+3/y-1/z=1

Algebra ->  Algebra  -> Equations -> SOLUTION: Help please?! SOLVE THE SYSTEM: 2/x+3/y-2/z=-1 3/x-18/y+5/z=4 5/x+3/y-1/z=1      Log On

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 Click here to see ALL problems on Equations Question 635926: Help please?! SOLVE THE SYSTEM: 2/x+3/y-2/z=-1 3/x-18/y+5/z=4 5/x+3/y-1/z=1Answer by DrBeeee(378)   (Show Source): You can put this solution on YOUR website!The inverse of variables is turning you up side down! Fix it! Merely let a = 1/x, b = 1/y and c = 1/z and yield the friendly 3x3 system of equations 2a + 3b - 2c = -1 3a - 18b + 5c = 4 5a + 3b - c = 1 Use Mathcad or your handy dandy TI-84 to get a, b and c. Then just get their inverse to get x, y, and z. You can also solve "by hand" using the inverse of a 3x3 matrix.