Answer:
14n-29
Step-by-step explanation:
Remove the unnecessary parenthesis around the (2n-9)
(2n-9)-5(-2.4n+4)
Distribute the -5 into the -2.4n+4
2n-9-5(2.4n+4)
2n-9+12n-20
Combine like terms
14n-9-20
