It is known that (a + b) divided by 2Ab = 3, then (3a-7ab + 3b) divided by (a + 3AB + b) is equal to? RT

It is known that (a + b) divided by 2Ab = 3, then (3a-7ab + 3b) divided by (a + 3AB + b) is equal to? RT

That is, a + B = 6ab
The original formula = [3 (a + b) - 7ab] / [(as + b) + 3AB]
=[3(6ab)-7ab]/[(6ab)+3ab]
=11ab/9ab
=11/9