X-4Y+2Z=21

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Solution for X-4Y+2Z=21 equation: 


Simplifying
X + -4Y + 2Z = 21

Solving
X + -4Y + 2Z = 21

Solving for variable 'X'.

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

Add '4Y' to each side of the equation.
X + -4Y + 4Y + 2Z = 21 + 4Y

Combine like terms: -4Y + 4Y = 0
X + 0 + 2Z = 21 + 4Y
X + 2Z = 21 + 4Y

Add '-2Z' to each side of the equation.
X + 2Z + -2Z = 21 + 4Y + -2Z

Combine like terms: 2Z + -2Z = 0
X + 0 = 21 + 4Y + -2Z
X = 21 + 4Y + -2Z

Simplifying
X = 21 + 4Y + -2Z

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