Respuesta :

BoReDoM3

Answer:

12 because 9+3 = 12 12 • 7 = 84

Step-by-step explanation:

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Answer:

the number is 3

Step-by-step explanation:

X= the number

7(x+9) = 84

7x+63 = 84

7x = 21

x=3

     Check:

    7(3+9) =84

      7 x12 = 84

       84=84