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Giải thích các bước giải:

`\text{(- 17) - (5+8 - 17)}`

$\text{=- 17 - 5 - 8 + 17}$

`\text{=(- 17 + 17) - 5 - 8}`

`\text{=0 - 5 - 8}`

`\text{=- 13}`

`\text{⇒Chọn B. - 13}`

$\textit{Cho hay nhất}$