Question

Operaciones combinadas
5 [7-2-(1-9)+3+9]+2

Answer 1

5 [7-2-(1-9)+3+9]+2

5 [7-2-(-8)+3+9]+2

5 (7-2+8+3+9)+2

5 × 25 + 2

125 + 2

127

Espero que te sirva. :)