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

Toán Lớp 7: 2022 – { 474 – 400 x [ 3 ^ 4 – ( 8 ^ 2 + 7 ) ] + 14 ^ 2 : 7} 40 + ( 239 – 2472 + 99 ) – ( – 239 + 199 – 2472 )

Toán Lớp 7: 2022 – { 474 – 400 x [ 3 ^ 4 – ( 8 ^ 2 + 7 ) ] + 14 ^ 2 : 7}
40 + ( 239 – 2472 + 99 ) – ( – 239 + 199 – 2472 )

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    2022 – { 474 – 400 × [ 3 ^ 4 – ( 8 ^ 2 + 7 ) ] + 14 ^ 2 : 7}
    =2022 – { 474 – 400 × [81 – ( 64 + 7 ) ] + 196 : 7}
    =2022 – [ 474 – 400 × (81 – 71 ) + 196 : 7]
    =2022 – ( 474 – 400 × 10 + 28)
    =2022 – ( 474 – 4000 + 28)
    =2022 – ( -3526 + 28)
    =2022-(-3498)
    =5520
    40 + ( 239 – 2472 + 99 ) – ( – 239 + 199 – 2472 )
    =40 + 239 – 2472 + 99 + 239 – 199 + 2472
    =40+(239+239)+(-2472+2472)+(99-199)
    =40+478+0+(-100)
    =518+(-100)
    =418

  2. 1
    2022 – { 474 – 400 × [ 3 ^ 4 – ( 8 ^ 2 + 7 ) ] + 14 ^ 2 : 7}
    =2022 – [ 474 – 400 × (81 – 71 ) + 196 : 7]
    =2022 – ( 474 – 400 × 10 + 28)
    =2022 – ( -3526 + 28)
    =2022+3498
    =5520
    2
    40 + ( 239 – 2472 + 99 ) – ( – 239 + 199 – 2472 )
    =40 + 239 – 2472 + 99 + 239 – 199 + 2472
    =(239+239)+(99-199)+(-2472+2472)+40
    =478+(-100)+0+40
    =418
     

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

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