53×39+4x6x87-38×40

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1. `53 . 39 + 4 . 6 . 87 – 38 . 40`

   `= 2067 + 2088 – 1520`

   `= 2635`

    

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2. Đáp án:

   53 x 39 + 4 x 6 x 87 – 38 x 40

   = 2067 + 2088 – 1520

   = 2635

   2 x 53 x 12 + 4 x 6 x 87 – 3 x 8 x 40

   = 53 x (2 x 12) + 87 x (4 x 6) – 40 x (3 x 8)

   = 53 x 24 + 87 x 24 – 40 x 24

   = 24 x (53 + 87 – 40)

   = 2400

   @Yết gửi bạn nhé~~

   HỌC TỐT~~

   #NOCOPY

   #NOTHINGISIMPOSSIBLE 

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