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

Toán Lớp 6: Giúp iem (-20+103-13)-(20+93-27)

Toán Lớp 6: Giúp iem
(-20+103-13)-(20+93-27)

Comments ( 2 )

  1. (-20 + 103 – 13) – (20 + 93 – 27)
    = -20 + 103 – 13 – 20 – 93 + 27
    = (-20 – 20) + (103 – 93) + (27 – 13)
    = -40 + 10 + 14
    = -30 + 14
    = -16

  2. (-20 + 103 – 13) – (20 + 93 – 27) 
    = -20 + 103 – 13 – 20 – 93 + 27
    = [(-20) + 20] + 103 – 13 – 93 + 27
    = 0 + 103 – 13 – 93 + 27
    = 103 – 13 – 93 + 27
    = 90 – 93 + 27
    = (-3) + 27
    = 24

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