Respuesta :
-4x - 9x = -13x
-4x + 9x = 5x
4x - 9x = -5x
4x - (-9x) = 4x + 9x = 13x
i.e. the second option is the answer
-4x + 9x = 5x
4x - 9x = -5x
4x - (-9x) = 4x + 9x = 13x
i.e. the second option is the answer
Answer:
-4x + 9x is your answer
hope this helps :)
Step-by-step explanation: