Question

6ab-6ac-6bx+6cx+6c-6b

Answer 1

$6a(b - c) - 6x(b - c) - 6(b - c) = \\ 6(a - x - 1)(b - c)$

Answer 2

6ab-6ac-6bx+6cx+6c-6b=6ab-6bx-6b-6ac+6cx+6c=6b(a-x-1)-6c(a-x-1)=(a-x-1)(6b-6c)=6(a-x-1)(b-c)

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