X-2y-z=7

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Solution for X-2y-z=7 equation:


Simplifying
X + -2y + -1z = 7

Solving
X + -2y + -1z = 7

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 + -1z = 7 + 2y

Combine like terms: -2y + 2y = 0
X + 0 + -1z = 7 + 2y
X + -1z = 7 + 2y

Add 'z' to each side of the equation.
X + -1z + z = 7 + 2y + z

Combine like terms: -1z + z = 0
X + 0 = 7 + 2y + z
X = 7 + 2y + z

Simplifying
X = 7 + 2y + z

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