To solve this expression, we can follow the order of operations (PEMDAS/BODMAS):

First, let's simplify the expression inside the parentheses:
(36-16) = 20
(-14-6) = -20
(-12)-(-7) = -12 + 7 = -5

Now, let's substitute these values back into the original expression:
(36-16).(-5) + 6.(-14-6) = 20.(-5) + 6.(-20)

Next, let's simplify the multiplication:
20.(-5) = -100
6.(-20) = -120

Now, let's substitute these values back into the expression:
-100 + (-120) = -100 - 120 = -220

Therefore, the final answer is -220.