Respuesta :

Answer:

 a + b - ( a - ( a-a)) = - 6

Step-by-step explanation:

Explanation:-

Given that a =-5 and b=-6

Given expression

        a + b - ( a - ( a-a))

  =  -5 +(-6)) - ( -5 -(-5-(-5))

  = -5 -6 - (-5 -0)

 =  - 5 - 6 +5

= - 6

Final answer:-

 a + b - ( a - ( a-a)) = - 6