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

Toán Lớp 6: a)387 + ( – 224 ) + ( – 87 ) ; b) ( – 75 ) + 329 ) + ( – 25 ) c)11 + ( – 13 ) + 15 + ( – 17 ) ai làm xong mình sẽ cho 5 sao 1 c

Toán Lớp 6: a)387 + ( – 224 ) + ( – 87 ) ; b) ( – 75 ) + 329 ) + ( – 25 )
c)11 + ( – 13 ) + 15 + ( – 17 )
ai làm xong mình sẽ cho 5 sao 1 cảm ơn

Comments ( 2 )

  1. Answer
    a, 387 + (-224) + (-87)
    = 387 – 224 – 87
    = (387 – 87) – 224
    = 300 – 224
    = 76
    ______________________
    b, (-75) + 329 + (-25)
    = -75 + 329 – 25
    = – (75 + 25) + 329
    = -100 + 329
    = 229
    _______________________
    c, 11 + (-13) + 15 + (-17)
    = 11 – 13 + 15 – 17
    = (11 – 13) + (15 – 17)
    = (-2) + (-2)
    = -4

  2. a) 387+(-224)+(-87)
    = [387+(-87)]+(-224)
    = 300+(-224)
    = 76
    b) (-75)+329+(-25)
    = [(-75)+(-25)]+329
    = -100+329
    = 229
    c) 11+(-13)+15+(-17)
    = [(-13)+(-17)]+(11+15)
    = -30+26
    = -4
    #namOvO

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

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