X+2y+3z=-9

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Solution for X+2y+3z=-9 equation: 


Simplifying
X + 2y + 3z = -9

Solving
X + 2y + 3z = -9

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 + 3z = -9 + -2y

Combine like terms: 2y + -2y = 0
X + 0 + 3z = -9 + -2y
X + 3z = -9 + -2y

Add '-3z' to each side of the equation.
X + 3z + -3z = -9 + -2y + -3z

Combine like terms: 3z + -3z = 0
X + 0 = -9 + -2y + -3z
X = -9 + -2y + -3z

Simplifying
X = -9 + -2y + -3z

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