Simplify 6(3q−4)+18−12q−7(4q+5)

To simplify the expression 6(3q−4)+18−12q−7(4q+5), we will distribute and combine like terms:

6(3q) - 6(4) + 18 - 12q - 7(4q) - 7(5)
18q - 24 + 18 - 12q - 28q - 35
(18q - 12q - 28q) + (18 - 24 - 35)
(-22q) + (-41)
-22q - 41

Therefore, the simplified expression is -22q - 41.