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

Toán Lớp 6: (9-8-7-…-2-1) . (500.9-250.18) Trình bày giúp mình với, mình cảm ơn

Toán Lớp 6: (9-8-7-…-2-1) . (500.9-250.18)
Trình bày giúp mình với, mình cảm ơn

Comments ( 2 )

  1. (9 – 8 – 7 – … – 2 – 1) . (500 . 9 – 250 . 18)
    = (9 – 8 – 7 – … – 2 – 1) . (500 . 9 – 250 . 2 . 9)
    = (9 – 8 – 7 – … – 2 – 1) . (500 . 9 – 500 . 9)
    = (9 – 8 – 7 – … – 2 – 1) . 0
    = 0

  2. (9-8-7-…-2-1) . (500.9-250.18)
    = (9-8-7-…-2-1) .(4500-4500)
    =(9-8-7-…-2-1) . 0
    =0

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