Question

{ ( 81 : 9 ) + 12 - [ 6 + ( 7 • 3) ] }​

Answer 1

Respuesta:

$((81 \times 9) + 12 - (6 + (7 \times 3)) \\ 9 + 12 - (6 + 21) \\ 9 + 12 - 27 \\ 21 - 27 \\ - 6$