x+y-2z=21

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Solution for x+y-2z=21 equation:


Simplifying
x + y + -2z = 21

Solving
x + y + -2z = 21

Solving for variable 'x'.

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

Add '-1y' to each side of the equation.
x + y + -1y + -2z = 21 + -1y

Combine like terms: y + -1y = 0
x + 0 + -2z = 21 + -1y
x + -2z = 21 + -1y

Add '2z' to each side of the equation.
x + -2z + 2z = 21 + -1y + 2z

Combine like terms: -2z + 2z = 0
x + 0 = 21 + -1y + 2z
x = 21 + -1y + 2z

Simplifying
x = 21 + -1y + 2z

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