Respuesta :

Answer: b+2


Step-by-step explanation:

4b-7-3b+9

b+2


Simplifying:

3b + -9 + -8b = 11


Reorder the terms:

-9 + 3b + -8b = 11


Combine like terms: 3b + -8b = -5b

-9 + -5b = 11


Solving

-9 + -5b = 11


Solving for variable 'b'.


Move all terms containing b to the left, all other terms to the right.


Add '9' to each side of the equation.

-9 + 9 + -5b = 11 + 9


Combine like terms: -9 + 9 = 0

0 + -5b = 11 + 9

-5b = 11 + 9


Combine like terms: 11 + 9 = 20

-5b = 20


Divide each side by '-5'.

b = -4


Simplifying

Answer: b = -4