Respuesta :

18 - [ 18 - [ 18 - ( 18 - 1)]]

= 18 - [ 18 - [ 18 - 17]]

=18 - [ 18 - 1]

= 18 -17

=1

Answer:

1

Step by step explanation:

18-{18-[18-(18-1)]}

18-{18-[18-17]}

18-{18-1}

18-17

1
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