Respuesta :

Answer:

2k

Step-by-step explanation:

Add:

-k + 3k

or

-1k + 3k

2k

(You have to add -1 + 3)

Hope this helps :)

Answer:

2k

Step-by-step explanation:

-k +3k

Factor out a k

k(-1+3)

k(2)

2k