How do you factor completely $ax-2x+ay-2y$ ?

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Answer 1 · 2017-02-08T21:27:50

I got: $(x+y)(a-2)$

Collect $a$ from the first and third and $-2$ from the second and fourth:
$a(x+y)-2(x+y)=$

now collect $(x+y)$ :

$=(x+y)(a-2)$

How do you factor completely ax-2x+ay-2yax-2x+ay-2y?