X-y-2z=a

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


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

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

Solving for variable 'X'.

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

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

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

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

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

Simplifying
X = a + y + 2z

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