3a-6b+ab-2b

To simplify the expression \(3a - 6b + ab - 2b\), you can combine like terms.

First, combine the \(b\) terms:

\[ -6b - 2b = -8b \]

Now, rewrite the expression:

\[ 3a + ab - 8b \]

So, the simplified expression is:

\[ 3a + ab - 8b \]