When there isn't a math symbol between two sets of parentheses, it means to multiply. Here's an example
(9)(5) = (9)*(5) = 45
So let's put that into our equation:
(-11)*(3/2)*(.12(-12))
Now, based on our order of operations, we need to do parentheses next. Some people like to think of PEMDAS to remember the order of operations. This picture might help out:
Let's do the parentheses next in our equation:
(-11)*(3/2)*(.12(-12))
(-11)*(3/2)*(-1.44)
Let's turn 3/2 to a decimal by divide 3 by 2. We get 1.5. Let's put this in the equation.
(-11)*(1.5)*(-1.44)
Now we just multiply through!
(-11)*(1.5)*(-1.44)
(-16.5)*(-1.44)
23.76