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Cash and cash equivalents: (Tables)
12 Months Ended
Dec. 31, 2023
Cash and cash equivalents:  
Schedule of cash and cash equivalents

December 31, 

    

2022

    

2023

Cash held at banks

 

Ps.

7,667,651

 

Ps.

10,751,796

Short term investments

 

5,507,340

 

3,121,101

Total cash and cash equivalents

 

Ps.

13,174,991

 

Ps.

13,872,897