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

Toán Lớp 5: (86,05 x 17,3 -7,3 x 8,605) x (86,05 x 100 – 86,05 : 0,01) + 2017

Toán Lớp 5: (86,05 x 17,3 -7,3 x 8,605) x (86,05 x 100 – 86,05 : 0,01) + 2017

Comments ( 2 )

  1. (86,05 × 17,3 – 7,3 × 8,605) × (86,05 × 100 – 86,05 : 0,01) + 2017
    = (86,05 × 17,3 – 7,3 × 8,605) × (86,05 × 100 – 86,05 : 1/100) + 2017
    = (86,05 × 17,3 – 7,3 × 8,605) × (86,05 × 100 – 86,05 × 100) + 2017
    = (86,05 × 17,3 – 7,3 × 8,605) × [(86,05 × 100) – (86,05 × 100)] + 2017
    = (86,05 × 17,3 – 7,3 × 8,605) × (8605 – 8605) + 2017
    = (86,05 × 17,3 – 7,3 × 8,605) × 0 + 2017
    = [(86,05 × 17,3 – 7,3 × 8,605) × 0] + 2017
    = 0 + 2017
    = 2017

  2. $#AS$
    (86,05 xx 17,3 – 7,3 xx 8,605) xx (86,05 xx 100 – 86,05 : 0,01) + 2017
    = (1488,665 – 62,8165) xx (8605 – 8605) + 2017
    = 1425,8485 xx 0 + 2017
    = 0 + 2017
    = 2017

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

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