Respostas

2013-02-19T15:52:28-03:00

53- {20 - [30 - 20+2]}

53-{20 - 12}

53- 8

45

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  • Usuário do Brainly
2013-02-19T15:56:21-03:00

Seja \text{L}=53-\{20-[30-(15-1+6)+2]\}

 

Desse modo, temos que:

 

\text{L}=53 - \{20-[30-20+2]\}

 

\text{L}=53-\{20-12\}

 

Donde, obtemos:

 

\text{L}=53-8=45

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