Respuesta :
Answer:
11,7
Step-by-step explanation:
-9,3,-1,
- 9 + X = 3 3 + X = - 1
+ 9 + 9 - 3 - 3
-------------------- --------------------
X = 12 X = - 4
- 1 + 12 = 11 11 + (- 4) = 7
Answer:
11,7
Step-by-step explanation:
-9,3,-1,
- 9 + X = 3 3 + X = - 1
+ 9 + 9 - 3 - 3
-------------------- --------------------
X = 12 X = - 4
- 1 + 12 = 11 11 + (- 4) = 7