Question

a) -[-12-(5+3)]=
b) 25+{14-[25×4+40-(20÷2+10)] }

Answer 1

Resposta:

Explicação passo a passo:

a)

- [- 12 - (5 + 3)] =

- [- 12 - (8)] =

- [- 12 - 8] =

- [- 20] =

20

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b)

25 + {14 - [25 × 4 + 40 - (20 ÷ 2 + 10)]} =

25 + {14 - [25 × 4 + 40 - (10 + 10)]} =

25 + {14 - [25 × 4 + 40 - (20)]} =

25 + {14 - [100 + 40 - 20]} =

25 + {14 - [140 - 20]} =

25 + {14 - [120]} =

25 + {14 - 120} =

25 + {- 106} =

25 - 106 =

- 81