Respuesta :

Answer:

-2b

Step-by-step explanation:

−4b+2b

=−4b+2b

=−b+−b+−b+−b+b+b

=−b−b

=−2b

Answer:

-2b

Step-by-step explanation:

This just an addition problem so there's not much work to show.

It's the same as -4 + 2 =  -2  but they just put variables in front of them so it's

-4b + 2b = -2b