X+2y-9z=-8

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Solution for X+2y-9z=-8 equation: 


Simplifying
X + 2y + -9z = -8

Solving
X + 2y + -9z = -8

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-2y' to each side of the equation.
X + 2y + -2y + -9z = -8 + -2y

Combine like terms: 2y + -2y = 0
X + 0 + -9z = -8 + -2y
X + -9z = -8 + -2y

Add '9z' to each side of the equation.
X + -9z + 9z = -8 + -2y + 9z

Combine like terms: -9z + 9z = 0
X + 0 = -8 + -2y + 9z
X = -8 + -2y + 9z

Simplifying
X = -8 + -2y + 9z

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