x+3y-9z=-13

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Solution for x+3y-9z=-13 equation: 


Simplifying
x + 3y + -9z = -13

Solving
x + 3y + -9z = -13

Solving for variable 'x'.

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

Add '-3y' to each side of the equation.
x + 3y + -3y + -9z = -13 + -3y

Combine like terms: 3y + -3y = 0
x + 0 + -9z = -13 + -3y
x + -9z = -13 + -3y

Add '9z' to each side of the equation.
x + -9z + 9z = -13 + -3y + 9z

Combine like terms: -9z + 9z = 0
x + 0 = -13 + -3y + 9z
x = -13 + -3y + 9z

Simplifying
x = -13 + -3y + 9z

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