Simplify 6(3q−4)+18−12q−7(4q+5).

Simplifying the expression, we have:

6(3q-4) + 18 - 12q - 7(4q+5)

Distribute the 6 and the 7 to the terms inside the parentheses:

18q - 24 + 18 - 12q - 28q - 35

Combine like terms:

(18q - 12q - 28q) + (-24 + 18 - 35)

-22q - 41