Select the factors of 6ab + 3ay - 2bx - xy

I am not sure what is the answer but i learnt to do this type of question this way:

firstly rewrite the equation

6ab-2bx+3ay-xy

then take the common out

2b (3a-x) + y (3a-x)

since the eqn in the brackets are the same, the final answer is written as:

(2b+y) (3a-x)