Respuesta :

b+(-2) = 0
⇒ b= 0+ 2
⇒ b= 2

The final answer is b= 2~
b + (-2) = 0

Here, we need to do the inverse operation, and apply it to BOTH sides of teh equation.

b -2 = 0
  +2    +2

b = 2

Now we have our answer, b = 2

Final answer: b = 2