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v3.21.1

Accounts payable and accrued expenses: (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounts payable and accrued expenses: |
Schedule of accounts payable and accrued expenses |
|  |  | December 31,
|  | 2019 |  | 2020
Suppliers |  | Ps. | 245,100 |  | Ps. | 353,885
Taxes payable |  |  | 175,573 |  |  | 57,174
Use rights of assets under concession |  |  | 269,916 |  |  | 5,070
Accounts payable to related parties (Note 14.1) |  |  | 97,312 |  |  | 53,256
Lease payable (Note 7.1) |  |  | 20,422 |  |  | 17,236
Salaries payable |  |  | 149,452 |  |  | 128,105
Sundry creditors for services provided |  |  | 803,746 |  |  | 640,068
Accounts payable to contractors |  |  | 37,809 |  |  | 343,610
Total |  | Ps. | 1,799,330 |  | Ps. | 1,598,404

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