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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: a. (72 – 8 x9) : (20 + 21 + 22 + 23 + 24 + 25) b. (500 x 9 – 250 x 18 ) x (1 + 2 + 3 + …+ 9) Giải giúp mik với.Xin cảm ơn

Toán Lớp 6: a. (72 – 8 x9) : (20 + 21 + 22 + 23 + 24 + 25)
b. (500 x 9 – 250 x 18 ) x (1 + 2 + 3 + …+ 9)
Giải giúp mik với.Xin cảm ơn

Comments ( 2 )

  1. a, (72 – 8 xx 9) : (20 + 21 + 22 + 23 + 24 + 25)
      = (72 – 72) : (20 + 21 + 22 + 23 + 24 + 25)
      = 0 : (20 + 21 + 22 + 23 + 24 + 25)
      = 0
    b, (500 xx 9 – 250 xx 18) xx (1 + 2 + 3 +…+ 9)
      = (4500 – 4500) xx (1 + 2 + 3 +…+ 9)
      = 0 xx (1 + 2 + 3 +…+ 9)
      = 0
     

  2. Answer
    a, (72 – 8 xx 9) : (20 + 21 + 22 + 23 + 24 + 25)
    = (72 – 72) : (20 + 21 + 22 + 23 + 24 + 25)
    = 0 : (20 + 21 + 22 + 23 + 24 + 25)
    = 0
    _________________________
    b, (500 xx 9 – 250 xx 18) xx (1 + 2 + 3 + … + 9)
    = (4500 – 4500) xx (1 + 2 + 3 + … + 9)
    = 0 xx (1 + 2 + 3 + … + 9)
    = 0

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222-9+11+12:2*14+14 = ? ( )