Respuesta :

Answer:

20

Step-by-step explanation:

-10 + 20 = +10

Answer:

[tex]\fbox {20}[/tex]

Step-by-step explanation:

Let the required term be x

Then :

  • x + (-10) = 10
  • x - 10 = 10
  • x = 10 + 10
  • x = 20

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