Question

x-y-z-3z-2y+2x-x+y-2z​

Answer 1

Answer :-

$x - y - z - 3z - 2y + 2x - x + y - 2z \\ = 2x - 2y - 6z \\ = 2(x - y - 3z)$

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Answer 2

$\large\sf{\color{lightgreen}{ \cancel{x} \cancel{- y }- z - 3z - 2y + 2x \: \: \cancel{- x} \: \: + \cancel{y} - {2z}}} \\ = \large\sf{ \color{lightblue}{ \underline{\underline{- 6z - 2y + 2x}}}}$