Respuesta :

Use distributive law.

(2n - 9) - 5(-2.4n + 4) = 2n - 9 + 12n - 20

Combine like terms.

(2n - 9) - 5(-2.4n + 4) = 2n + 12n - 9 - 20

Add like terms.

(2n - 9) - 5(-2.4n + 4) = 14n - 29

Hence, the answer is 14n - 29.