-2017-(28-2017); -(269-357)+(269-367) kết quả luôn nha

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1. `text{· -2017 – (28 – 2017)}`

   `text{= -2017 – (-1989)}`

   `text{= -2017 + 1989}`

   `text{= -28}`

   `text{· -(269 – 357) + (269 – 367)}`

   `text{= -(-88) + (-98)}`

   `text{= 88 – 98}`

   `text{= -10}`

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2. `- 2017 – ( 28 – 2017 )`

   `= – 2017 – 28 + 2017`

   `= ( – 2017 + 2017 ) – 28`

   `= 0 – 28`

   `= – 28`

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   `- ( 269 – 357 ) + ( 269 – 367 )`

   `= – 269 + 357 + 269 – 367`

   `= ( – 269 + 269 ) + ( 357 – 367 )`

   `= 0 + ( – 10 )`

   `= – 10`

    

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