What is the greatest common factor of 2x+3ay+ax+6y

1

Step-by-step explanation:

The notion of "common factor" suggests that a factor is part of each term. Here, 1 is the only common factor.

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However, the expression can be factored as ...

x (2 + a) + 3y (2 + a) = (x + 3y) (2 + a)

If there were a common factor, it would appear outside the binomial factors. The value 1 is always present, but rarely shown.