Pecahkan persamaan linear berikut dengan mencari nilai x.y dan z X+2y+2z=-1 X+3y+z=4 X+ 3y+2z=3

x + 2y + 2z = -1
x + 3y + z = 4
____________ -
-y + z = -5

x + 3y + z = 4
x + 3y + 2z = 3
_____________ - 
-z = 1
z = -1

-y + z = -1
-y - 1 = -1
________ x -1
y + 1 = 1
y = 0

x + 2y + 2z = -1
x + 0 + 2(-1) = -1
x + -2 = -1
x = -1 + 2
x = 1

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