Respuesta :

Answer:

Add the numbers that have the same variables and exponents. Hope this helps!

Step-by-step explanation:

Answer:

-3x³ - 4x - 9

Step-by-step explanation:

-5x + x - 6x³ - 4 - 5  + 6x³ - 3x³

-6x³ + 6x³ - 3x³ - 5x + x - 4 - 5

-3x³ - 4x - 9