May 2021 1 27 Report
Realizar las siguientes operaciones e indicar a cuál conjunto numérico pertenece su resultado
1. [5 x (8+4)+7 x (9+20)]-30
2. [25 x (9+14)] ÷ [2 x (9-8)]
3. [12 x (2-3)] ÷[(5-20+18)-13]

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